|                                                                                                                                                                                    | **United                  States**                                                                                                              |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | **Securities                  and Exchange Commission**                                                                                         |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | **Washington,                  D.C. 20549**                                                                                                     |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | **Form                  10 QSB**                                                                                                                |
|                                                                                                                                                                                    |                                                                                                                                            |
| (Mark                  One)                                                                                                                                                             |
|                                                                                                                                                                                    |                                                                                                                                            |
| **R**                                                                                                                                                                                   | **QUARTERLY                  REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE                  ACT OF                  1934** |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | For                  the quarterly period ended September 30, 2007                                                                              |
|                                                                                                                                                                                    |                                                                                                                                            |
| o                                                                                                                                                                                       | **TRANSITION                  REPORT UNDER SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT                  OF                  1934**      |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | For                  the transition period from _____ to _____                                                                                  |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | Commission                  file number 333-127355                                                                                              |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    | **ATLAS                  AMERICA PUBLIC #15-2005 (A) L.P.**                                                                                     |
|                                                                                                                                                                                    | (Name                  of small business issuer in its charter)                                                                                 |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    |                                                                                                                                            |
|                                                                                                                                                                                    |                                                                                                                                            |
| **Delaware**                                                                                                                                                                            | **20-3208344**                                                                                                                                  |
| (State                  or other jurisdiction ofincorporation                  or organization)                                                                                         | (I.R.S.                  EmployerIdentification                  No.)                                                                           |
|                                                                                                                                                                                    |                                                                                                                                            |
| Westpointe                  Corporate Center One                                                                                                                                        |                                                                                                                                            |
| 1550                  Coraopolis Heights Road, 2nd Floor                                                                                                                                |                                                                                                                                            |
| Moon                  Township, PA                                                                                                                                                      | 15108                                                                                                                                           |
| (Address                  of principal executive offices)                                                                                                                               | (zip                  code)                                                                                                                     |
|                                                                                                                                                                                    |                                                                                                                                            |
| Issuer’s                  telephone number, including area code: **(412)                  262-2830**                                                                              |
|                                                                                                                                                                                    |
| Indicate                  by check mark whether the registrant (1) filed all reports required                  to be                  filed by Section 13 or 15 (d) of the Exchange Act |
| during                  the past 12 months (or for such shorter period that the registrant                  was                  required to file such reports),                        |
| and                  (2) has been subject to such filing requirements for the past 90                  days.                  Yes** ****R**                  No o                  |
|                                                                                                                                                                                    |
| Indicate                  by check mark whether the registrant is a shell company (as defined                  in                  Rule 12b-2 of the Exchange                           |
| Act).Yes                  o                  No **R**                                                                                                                                   |
|                                                                                                                                                                                    |
| Transitional                  Small Business Disclosure Format (check one): Yes o                  No **R**                                                                             |

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**(A        Delaware Limited Partnership)**

**INDEX        TO QUARTERLY REPORT**

**ON        FORM 10-QSB**

| **PART                  I.**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **FINANCIAL                  INFORMATION**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | **PAGE** |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| Item                  1:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | Financial                  Statements                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Balance                  Sheets as of September 30, 2007 and December 31, 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | 3        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Statements                  of Net Earnings for the Three Months and Nine Months ended September                  30,                  2007 and 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 4        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Statement                  of Partners’ Capital Accounts for the Nine Months ended September 30,                  2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | 5        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Statements                  of Cash Flows for the Nine Months ended September 30, 2007 and                  2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 6        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Notes                  to Financial                  Statements                                                                                                                              | 7-12     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| Item                  2:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | Management’s                  Discussion and Analysis of Financial Condition or Plan of                  Operations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 13-17    |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| Item                  3:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | Controls                  and                  Procedures                                                                                                                                    | 17       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| **PART                  II.**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | **OTHER                  INFORMATION**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| Item                  6:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | Exhibits                                                                                                                                                                                     | 17       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| **SIGNATURES                                                                                                                                                  **     | 18     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
| **CERTIFICATIONS                                                                                                                                                  ** | 19-22  |

**PART        I**

**ITEM        1.                      FINANCIAL        STATEMENTS**

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**BALANCE        SHEETS**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | **September                  30,** |       |   | **December                  31,** |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------|------------|--------|-----------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | **2007**                           |       |   | **2006**                          |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | **(Unaudited)**                    |       |   | **(Audited)**                     |   |
| **ASSETS**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                               |       |   |                              |   |
| Current                  assets:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                               |       |   |                              |   |
| Cash                  and cash                  equivalents                                                                                                                |   | $                                  | 865,700    |   |                              | $      | 1,238,300 |   |
| Accounts                  receivable-affiliate                                                                                                                             |   |                               | 2,870,400  |   |                              |   | 3,218,100 |   |
| Short-term                  hedge receivable due from                  affiliate                                                                                           |   |                               | 1,007,500  |   |                              |   | 2,613,800 |   |
| Total                  current                  assets                                                                                                                                                             |   |                               | 4,743,600  |   |                              |   | 7,070,200 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                               |       |   |                              |   |   |   |
| Oil                  and gas properties,                  net                                                                                                              |   |                               | 50,336,500 |   |                              |   | 56,327,400 |   |
| Long-term                  hedge receivable due from                  affiliate                                                                                            |   |                               | 538,500    |   |                              |   | 2,256,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | $                                  | 55,618,600 |   |                              | $      | 65,654,100 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                               |       |   |                              |   |   |   |
| **LIABILITIES                  AND PARTNERS’ CAPITAL**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                               |       |   |                              |   |   |   |
| Current                  liabilities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |                               |       |   |                              |   |   |   |
| Accrued                  liabilities                                                                                                                                       |   | $                                  | 20,600     |   |                              | $      | 18,000 |   |
| Short-term                  hedge liability due to                  affiliate                                                                                              |   |                               | 161,700    |   |                              |   | 16,300 |   |
| Total                  current                  liabilities                                                                                                                                                   |   |                               | 182,300    |   |                              |   | 34,300 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                               |       |   |                              |   |   |   |
| Asset                  retirement                  obligation                                                                                                              |   |                               | 1,309,500  |   |                              |   | 1,253,200 |   |
| Long-term                  hedge liability due to                  affiliate                                                                                               |   |                               | 747,300    |   |                              |   | 363,000 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                               |       |   |                              |   |   |   |
| Partners’                  capital:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                               |       |   |                              |   |   |   |
| Managing                  general                  partner                                                                                                                 |   |                               | 10,832,600 |   |                              |   | 12,334,100 |   |
| Limited                  partners (5,227.40                  units)                                                                                                        |   |                               | 42,073,700 |   |                              |   | 47,509,300 |   |
| Accumulated                  other comprehensive                  income                                                                                                   |   |                               | 473,200    |   |                              |   | 4,160,200 |   |
| Total                  partners'                  capital                                                                                                                                                     |   |                               | 53,379,500 |   |                              |   | 64,003,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | $                                  | 55,618,600 |   |                              | $      | 65,654,100 |   |

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**STATEMENTS        OF NET EARNINGS**

**(Unaudited)**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **Three                  Months Ended** |      |   | **Nine                  Months Ended** |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|----------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **September                  30,**      |      |   | **September                  30,**     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **2007**                                |      |   | **2006**                               |   |   | **2007** |   |   | **2006** |   |
| **REVENUES:**                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                    |      |   |                                   |   |   |   |   |   |   |   |
| Natural                  gas and                  oil                                                                       |   | $                                       | 3,224,600 |   |                                   | $      | 4,337,300 |   |   | $ | 10,643,700 |   |   | $ | 7,018,700 |   |
| Interest                  income                                                                                            |   |                                    | 2,500     |   |                                   |   | 1,800 |   |   |   | 18,600 |   |   |   | 1,900 |   |
| Total                  revenues                                                                                                                                     |   |                                    | 3,227,100 |   |                                   |   | 4,339,100 |   |   |   | 10,662,300 |   |   |   | 7,020,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                    |      |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| **COSTS                  AND EXPENSES:**                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                    |      |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Production                                                                                                                  |   |                                    | 635,800   |   |                                   |   | 626,300 |   |   |   | 2,050,500 |   |   |   | 1,005,100 |   |
| Depletion                                                                                                                   |   |                                    | 1,611,100 |   |                                   |   | 1,864,700 |   |   |   | 5,447,400 |   |   |   | 2,984,400 |   |
| Accretion                  of asset retirement obligation                                                                                                                                                                                                                                                                                                                                                                                              |   |                                    | 18,700    |   |                                   |   | 16,500 |   |   |   | 56,300 |   |   |   | 49,500 |   |
| General                  and                  administrative                                                                |   |                                    | 82,300    |   |                                   |   | 41,900 |   |   |   | 190,300 |   |   |   | 91,500 |   |
| Total                  expenses                                                                                                                                     |   |                                    | 2,347,900 |   |                                   |   | 2,549,400 |   |   |   | 7,744,500 |   |   |   | 4,130,500 |   |
| **Net                  earnings                                                               **                            |   | $                                       | 879,200   |   |                                   | $      | 1,789,700 |   |   | $ | 2,917,800 |   |   | $ | 2,890,100 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                    |      |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| **Allocation                  of net earnings:**                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                    |      |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Managing                  general                  partner                                                                  |   | $                                       | 734,300   |   |                                   | $      | 1,119,700 |   |   | $ | 2,301,300 |   |   | $ | 1,754,300 |   |
| Limited                  partners                                                                                           |   | $                                       | 144,900   |   |                                   | $      | 670,000 |   |   | $ | 616,500 |   |   | $ | 1,135,800 |   |
| Net                  earnings per limited partnership unit                                                                                                                                                                                                                                                                                                                                                                                             |   | $                                       | 28        |   |                                   | $      | 128 |   |   | $ | 118 |   |   | $ | 217 |   |

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**STATEMENT        OF PARTNERS’ CAPITAL ACCOUNTS**

**FOR        THE NINE MONTHS ENDED**

**September        30, 2007**

**(Unaudited)**

|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       | **Accumulated**                    |   |   |       |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------|------------|--------|--------------|--------|------------|------------------------------------|--------|--------|------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                              |   | **Managing** |       |   |         |   |       | **Other**                          |   |   |       |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   | **General**  |       |   | **Limited**  |   |       | **Comprehensive**                  |   |   |       |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   | **Partner**  |       |   | **Partners** |   |       | **Income                  (Loss)** |   |   | **Total**  |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |
| **Balance                  at January 1, 2007**                                                                                                                                                                                                                                                                                                                                                                   |   | $            | 12,334,100 |   |         | $      | 47,509,300 |                               |   | $      | 4,160,200  |   |   | $ | 64,003,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| Participation                  in revenues and expenses:                                                                                                                                                                                                                                                                                                                                                          |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| Net                  production                  revenues                                                                                          |   |         | 3,099,600  |   |         |   | 5,493,600  |                               |   |   | —    |   |   |   | 8,593,200 |   |
| Interest                  income                                                                                                                   |   |         | 6,700      |   |         |   | 11,900     |                               |   |   | —    |   |   |   | 18,600 |   |
| Depletion                                                                                                                                          |   |         | (716,100   | )      |         |   | (4,731,300 | )                                  |   |   | —    |   |   |   | (5,447,400 | ) |
| Accretion                  of asset retirement obligation                                                                                                                                                                                                                                                                                                                                                         |   |         | (20,300    | )      |         |   | (36,000    | )                                  |   |   | —    |   |   |   | (56,300 | ) |
| General                  and                  administrative                                                                                       |   |         | (68,600    | )      |         |   | (121,700   | )                                  |   |   | —    |   |   |   | (190,300 | ) |
| Net                  earnings                                                                                                                                          |   |         | 2,301,300  |   |         |   | 616,500    |                               |   |   | —    |   |   |   | 2,917,800 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| Other                  comprehensive                  loss                                                           |   |         | —    |   |         |   | —    |                               |   |   | (3,687,000 | )      |   |   | (3,687,000 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| MGP                  adjusted asset contributions                                                                                                                                                                                                                                                                                                                                                                 |   |         | (388,200   | )      |         |   | —    |                               |   |   | —    |   |   |   | (388,200 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| Distributions                  to                  partners                                                          |   |         | (3,414,600 | )      |         |   | (6,052,100 | )                                  |   |   | —    |   |   |   | (9,466,700 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| **Balance                  at September 30, 2007**                                                                                                                                                                                                                                                                                                                                                                |   | $            | 10,832,600 |   |         | $      | 42,073,700 |                               |   | $      | 473,200    |   |   | $ | 53,379,500 |   |

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**STATEMENTS        OF CASH FLOWS**

**(Unaudited)**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **Nine                  Months Ended** |       |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------------------|------------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **September                  30,**     |       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **2007**                               |       |   | **2006** |   |
| **Cash                  flows from operating activities:**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                   |       |   |   |   |
| Net                  earnings                                                                                                                                                              |   | $                                      | 2,917,800  |   |   | $ | 2,890,100 |   |
| Adjustments                  to reconcile net earnings to net cash provided by (used in) operating                  activities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |                                   |       |   |   |   |   |   |
| Depletion                                                                                                                                                                                  |   |                                   | 5,447,400  |   |   |   | 2,984,400 |   |
| Non-cash                  loss on derivative                  value                                                                                                                        |   |                                   | 167,000    |   |   |   | — |   |
| Accretion                  of asset retirement                  obligation                                                                                                                 |   |                                   | 56,300     |   |   |   | 49,500 |   |
| Decrease                  (increase) in accounts                  receivable-affiliate                                                                                                     |   |                                   | 503,100    |   |   |   | (4,346,600 | ) |
| Increase                  (decrease) in accrued                  liabilities                                                                                                               |   |                                   | 2,600      |   |   |   | (2,166,300 | ) |
| Net                  cash provided by (used in) operating                  activities                                                                                                      |   |                                   | 9,094,200  |   |   |   | (588,900 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                   |       |   |   |   |   |   |
| **Cash                  flows from financing activities:**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                   |       |   |   |   |   |   |
| Return                  of initial capital contributions to                  MGP                                                                                                           |   |                                   | (100       | ) |   |   | — |   |
| Distributions                  to                  partners                                                                                                                                |   |                                   | (9,466,700 | ) |   |   | (1,377,600 | ) |
| Net                  cash used in financing                  activities                                                                                                                    |   |                                   | (9,466,800 | ) |   |   | (1,377,600 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                   |       |   |   |   |   |   |
| Net                  decrease in cash and cash                  equivalents                                                                                                                |   |                                   | (372,600   | ) |   |   | (1,966,500 | ) |
| Cash                  and cash equivalents at beginning of                  period                                                                                                         |   |                                   | 1,238,300  |   |   |   | 2,168,100 |   |
| Cash                  and cash equivalents at end of                  period                                                                                                               |   | $                                      | 865,700    |   |   | $ | 201,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                   |       |   |   |   |   |   |
| **Supplemental                  Schedule of non-cash investing and financing                  activities:**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                                   |       |   |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                   |       |   |   |   |   |   |
| Assets                  contributed by and returned to managing general partner:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                   |       |   |   |   |   |   |
| Tangible                  equipment included in oil and gas properties                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | $                                      | (365,200   | ) |   | $ | — |   |
| Lease                  costs included in oil and gas                  properties                                                                                                                                    |   |                                   | (22,900    | ) |   |   | 1,297,700 |   |
| Intangible                  drilling costs included in oil and gas properties                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                   | —    |   |   |   | 9,858,800 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | $                                      | (388,100   | ) |   | $ | 11,156,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                   |       |   |   |   |   |   |
| Asset                  retirement                  obligation                                                                                                                                                       |   | $                                      | —    |   |   | $ | 963,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                   |       |   |   |   |   |   |
| Additional                  assets contributed to limited partners:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                   |       |   |   |   |   |   |
| Tangible                  equipment/leasehold and intangible drilling                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | $                                      | (155,400   | ) |   | $ | 49,790,900 |   |

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**NOTES        TO FINANCIAL STATEMENTS**

**September        30, 2007**

**(Unaudited)**

**NOTE        1 - DESCRIPTION        OF BUSINESS**

**NOTE        2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES**

**Use        of Estimates**

**Receivables**

**Revenue        Recognition**

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**NOTES        TO FINANCIAL STATEMENTS (Continued)**

**September        30, 2007**

**(Unaudited)**

**NOTE        2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)**

**Asset        Retirement Obligation**

*Accounting for Asset Retirement        Obligations*
*, Accounting for Conditional Asset Retirement        Obligations.*

|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **Three                  Months Ended** |      |   | **Nine                  Months Ended** |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|----------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **September                  30,**      |      |   | **September                  30,**     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **2007**                                |      |   | **2006**                               |   |   | **2007** |   |   | **2006** |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |      |   |                                   |   |   |   |   |   |   |   |
| Asset                  retirement obligation at beginning of period                                                                                                                                                                                                                                                                                                                                                                            |   | $                                       | 1,290,800 |   |                                   | $      | 1,132,400 |   |   | $ | 1,253,200 |   |   | $ | 135,900 |   |
| Liabilities                  incurred from drilling wells                                                                                                                                                                                                                                                                                                                                                                                      |   |                                    | —   |   |                                   |   | — |   |   |   | — |   |   |   | 963,500 |   |
| Accretion                  expense                                                                   |   |                                    | 18,700    |   |                                   |   | 16,500 |   |   |   | 56,300 |   |   |   | 49,500 |   |
| Asset                  retirement obligation at end of period                                                                                                                                                                                                                                                                                                                                                                                  |   | $                                       | 1,309,500 |   |                                   | $      | 1,148,900 |   |   | $ | 1,309,500 |   |   | $ | 1,148,900 |   |

**Property        and Equipment**

| Oil                  and gas properties consist of the following at the dates                  indicated:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | **September                  30,** |        |   | **December                  31,** |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------|-------------|--------|-----------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | **2007**                           |        |   | **2006**                          |   |
| Mineral                  interest in properties:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |                               |        |   |                              |   |
| Proved                  properties                                                                                                                                                  |   | $                                  | 1,512,100   |   |                              | $      | 1,535,000 |   |
| Wells                  and related                  equipment                                                                                                                       |   |                               | 59,545,800  |   |                              |   | 60,066,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                               | 61,057,900  |   |                              |   | 61,601,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                               |        |   |                              |   |   |   |
| Accumulated                  depletion of oil and gas                  properties                                                                                                   |   |                               | (10,721,400 | )      |                              |   | (5,274,000 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | $                                  | 50,336,500  |   |                              | $      | 56,327,400 |   |

**Recently        Issued Financial Accounting Standards**

*Offsetting of Amounts Related to Certain Contracts*

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**NOTES        TO FINANCIAL STATEMENTS (Continued)**

**September        30, 2007**

**(Unaudited)**

**NOTE        2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)**

**Recently        Issued Financial Accounting Standards (Continued)**

*The Fair Value Option for Financial        Assets and Financial Liabilities.  *

*Fair Value        Measurement.  *

**NOTE        3 -        TRANSACTIONS WITH ATLAS RESOURCES, LLC AND ITS AFFILIATES**

| ·   | Administrative                  costs which are included in general and administrative expenses                  in the                  Partnership’s Statements of Net Earnings are payable at $75 per well per                  month.  Administrative costs incurred for the three months and                  nine months ended September 30, 2007 were $39,600 and $117,100,                  respectively.  Administrative costs incurred for the three                  months and nine months ended September 30, 2006 were $33,100 and                  $56,000,                  respectively. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Monthly                  well supervision fees which are included in production expenses                  in the                  Partnership’s Statements of Net Earnings are currently payable at $285 per                  well per month for operating and maintaining the wells.  Well                  supervision fees incurred for the three months and nine months                  ended                  September 30, 2007 were $150,300 and $444,900,                  respectively.  Well supervision fees incurred for the three                  months and nine months ended September 30, 2006 were $125,800 and                  $212,700, respectively. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Transportation                  fees which are included in production expenses in the Partnership’s                  Statements of Net Earnings are payable at rates ranging from $.29-$.35                  per                  one thousand cubic feet ("Mcf") to 13% of the natural gas sales                  price.  Transportation fees incurred for the three months and                  nine months ended September 30, 2007 were $394,500 and $1,316,500,                  respectively.  Transportation fees incurred for the three months                  and nine months ended September 30, 2006 were $420,100 and $677,800,                  respectively. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Asset                  contributions from the MGP, which are disclosed on the Partnership's                  Statement of Cash Flows as a non-cash activity for the nine months                  ended                  September 30, 2006, were $11,156,500.  Asset contributions                  returned to MGP, which are disclosed in the Partnership's Statement                  of                  Cash Flow as a non-cash activity for the nine months ended September                  30,                  2007, were $388,100.  Additional assets contributions which are                  disclosed                  on the Partnership's Statements of Cash Flows as a non-cash activity                  for                  the nine months ended September 30, 2006 were                  $49,790,900.  Additional assets returned which are disclosed on                  the Partnership's Statements of Cash Flows as a non-cash activity                  for the                  nine months ended September 30, 2007 were                  $155,400. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**NOTES        TO FINANCIAL STATEMENTS (Continued)**

**September        30, 2007**

**(Unaudited)**

**NOTE        3 -        TRANSACTIONS WITH ATLAS RESOURCES, LLC AND ITS AFFILIATES        (Continued)**

**Subordination        by Managing General Partner**

**NOTE        4 – COMPREHENSIVE INCOME**

|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | **Three                  Months Ended** |      |   | **Nine                  Months Ended** |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|----------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | **September                  30,**      |      |   | **September                  30,**     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | **2007**                                |      |   | **2006**                               |   |   | **2007** |   |   | **2006** |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                    |      |   |                                   |   |   |   |   |   |   |   |
| Net                  earnings                                                                                             |   | $                                       | 879,200   |   |                                   | $      | 1,789,700 |   |   | $ | 2,917,800 |   |   | $ | 2,890,100 |   |
| Other                  comprehensive (loss) income:                                                                                                                                                                                                                                                                                                                                                                                   |   |                                    |      |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Unrealized                  holding gain (loss) on hedging contracts                                                                                                                                                                                                                                                                                                                                                                  |   |                                    | 701,300   |   |                                   |   | 3,945,200 |   |   |   | (2,541,500 | ) |   |   | 4,090,800 |   |
| Less:                  reclassification adjustment for gains realized in net                  earnings                                                                                                                                                                                                                                                                                                                                |   |                                    | (318,600  | )      |                                   |   | (365,500 | ) |   |   | (1,145,500 | ) |   |   | (401,500 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                    | 382,700   |   |                                   |   | 3,579,700 |   |   |   | (3,687,000 | ) |   |   | 3,689,300 |   |
| Comprehensive                  income                  (loss)                                                             |   | $                                       | 1,261,900 |   |                                   | $      | 5,369,400 |   |   | $ | (769,200 | ) |   | $ | 6,579,400 |   |

**NOTE        5 – DERIVATIVE INSTRUMENTS**

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**NOTES        TO FINANCIAL STATEMENTS (Continued)**

**September        30, 2007**

**(Unaudited)**

**NOTE        5 – DERIVATIVE INSTRUMENTS (Continued)**

| **Fixed                  Price Swaps** |                               |   |                             |      |   |                             |                             |   |                            |       |
|----------------------------------------|------------------------------------|--------|----------------------------------|-----------|--------|----------------------------------|----------------------------------|--------|---------------------------------|------------|
|                                   |                               |   |                             |      |   |                             |                             |   | **Fair                  Value** |       |
|                                   | **Twelve                  Month**  |   | **Volumes**                      |      |   | **Average**                      |                             |   | **Asset**                       |       |
|                                   | **Period                  Ending** |   | **(per                  MMBTU)** |      |   | **Fixed                  Price** |                             |   | **(Liability)**                 |       |
|                                   | **September                  30,** |   | ** **                       | **(1)**   |   |                             | **(per                  MMBTU)** |   |                            | ** ** | **(2)** |   |
|                                   |                               |   |                             |      |   |                             |                             |   |                            |       |   |   |
|                                   | 2008                               |   |                             | 1,070,300 |   |                             | $                                | 8.69   |                            |       | $ | 803,800 |   |
|                                   | 2009                               |   |                             | 1,042,600 |   |                             | $                                | 8.41   |                            |       |   | 161,300 |   |
|                                   | 2010                               |   |                             | 703,000   |   |                             | $                                | 7.87   |                            |       |   | (192,500 | ) |
|                                   | 2011                               |   |                             | 385,100   |   |                             | $                                | 7.46   |                            |       |   | (161,800 | ) |
|                                   | 2012                               |   |                             | 79,000    |   |                             | $                                | 7.37   |                            |       |   | (34,200 | ) |
|                                   |                               |   |                             |      |   |                             |                             |   |                            |       | $ | 576,600 |   |

**ATLAS        AMERICA PUBLIC #15-2005 (A) L.P.**

**NOTES        TO FINANCIAL STATEMENTS**
**(Continued)**

**September        30, 2007**

**(Unaudited)**

**NOTE        5 – DERIVATIVE INSTRUMENTS (Contributed)**

| **Costless                  Collars** |                               |                            |   |                             |    |   |                                 |                             |   |                            |       |
|---------------------------------------|------------------------------------|---------------------------------|--------|----------------------------------|---------|--------|--------------------------------------|----------------------------------|--------|---------------------------------|------------|
|                                  |                               |                            |   |                             |    |   |                                 |                             |   | **Fair                  Value** |       |
|                                  | **Twelve                  Month**  |                            |   | **Volumes**                      |    |   | **Average**                          |                             |   | **Asset**                       |       |
|                                  | **Period                  Ending** | **Option**                      |   | **(per                  MMBTU)** |    |   | **Floor                  & Cap** |                             |   | **(Liability)**                 |       |
|                                  | **September                  30,** | **Type**                        |   | ** **                       | **(1)** |   |                                 | **(per                  MMBTU)** |   |                            | ** ** | **(2)** |   |
|                                  |                               |                            |   |                             |    |   |                                 |                             |   |                            |       |   |   |
|                                  | 2008                               | Puts                  purchased |   |                             | 29,600  |   |                                 | $                                | 7.50   |                            |       | $ | 20,700 |   |
|                                  | 2008                               | Calls                  sold     |   |                             | 29,600  |   |                                 | $                                | 8.60   |                            |       |   | — |   |
|                                  | 2008                               | Puts                  purchased |   |                             | 77,000  |   |                                 | $                                | 7.50   |                            |       |   | 21,300 |   |
|                                  | 2008                               | Calls                  sold     |   |                             | 77,000  |   |                                 | $                                | 9.40   |                            |       |   | — |   |
|                                  | 2009                               | Puts                  purchased |   |                             | 25,700  |   |                                 | $                                | 7.50   |                            |       |   | — |   |
|                                  | 2009                               | Calls                  sold     |   |                             | 25,700  |   |                                 | $                                | 9.40   |                            |       |   | (2,100 | ) |
|                                  | 2010                               | Puts                  purchased |   |                             | 142,200 |   |                                 | $                                | 7.75   |                            |       |   | 9,500 |   |
|                                  | 2010                               | Calls                  sold     |   |                             | 142,200 |   |                                 | $                                | 8.75   |                            |       |   | — |   |
|                                  | 2011                               | Puts                  purchased |   |                             | 47,400  |   |                                 | $                                | 7.75   |                            |       |   | (300 | ) |
|                                  | 2011                               | Calls                  sold     |   |                             | 47,400  |   |                                 | $                                | 8.75   |                            |       |   | — |   |
|                                  | 2011                               | Puts                  purchased |   |                             | 355,400 |   |                                 | $                                | 7.50   |                            |       |   | 15,800 |   |
|                                  | 2011                               | Calls                  sold     |   |                             | 355,400 |   |                                 | $                                | 8.45   |                            |       |   | — |   |
|                                  | 2012                               | Puts                  purchased |   |                             | 118,500 |   |                                 | $                                | 7.50   |                            |       |   | — |   |
|                                  | 2012                               | Calls                  sold     |   |                             | 118,500 |   |                                 | $                                | 8.45   |                            |       |   | (1,700 | ) |
|                                  | 2012                               | Puts                  purchased |   |                             | 426,500 |   |                                 | $                                | 7.50   |                            |       |   | — |   |
|                                  | 2012                               | Calls                  sold     |   |                             | 426,500 |   |                                 | $                                | 8.45   |                            |       |   | (1,600 | ) |
|                                  | 2013                               | Puts                  purchased |   |                             | 142,200 |   |                                 | $                                | 7.00   |                            |       |   | — |   |
|                                  | 2013                               | Calls                  sold     |   |                             | 142,200 |   |                                 | $                                | 8.37   |                            |       |   | (1,200 | ) |
|                                  |                               |                            |   |                             |    |   |                                 |                             |   |                            |       | $ | 60,400 |   |
|                                  |                               |                            |   |                             |    |   |                                 |                             |   |                            |       |   |   |   |
|                                  |                               |                            |   |                             |    |   |                                 | Net                  Asset       |   |                            | $          | 637,000 |   |

| (1)   | MMBTU                  represents million British Thermal                  Units. |
|-----------------|-----------------------------------------------------------------------------------|

| (2)   | Fair                  value based on forward NYMEX natural gas                  prices. |
|-----------------|-----------------------------------------------------------------------------------------|

|                                                                                                                                                                                                                                                                                                            |   | **September                  30, 2007** |      |   | **December                  31, 2006** |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|----------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                            |   | **Book                  Value**         |      |   | **Fair                  Value**        |   |   | **Book                  Value** |   |   | **Fair                  Value** |   |
| Assets                                                                                                                                                                                                                                                                                                          |   |                                    |      |   |                                   |   |   |   |   |   |   |   |
| Derivative                  instruments                                             |   | $                                       | 1,546,000 |   |                                   | $      | 1,546,000 |   |   | $ | 4,870,300 |   |   | $ | 4,870,300 |   |
|                                                                                                                                                                                                                                                                                                            |   | $                                       | 1,546,000 |   |                                   | $      | 1,546,000 |   |   | $ | 4,870,300 |   |   | $ | 4,870,300 |   |
| Liabilities                                                                                                                                                                                                                                                                                                     |   |                                    |      |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Derivative                  instruments                                             |   | $                                       | (909,000  | )      |                                   | $      | (909,000 | ) |   | $ | (379,300 | ) |   | $ | (379,300 | ) |
|                                                                                                                                                                                                                                                                                                            |   | $                                       | 637,000   |   |                                   | $      | 637,000 |   |   | $ | 4,491,000 |   |   | $ | 4,491,000 |   |

**ITEM        2.   MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION        OR PLAN OF OPERATIONS (UNAUDITED)**

**Forward-Looking        Statements**

*The        matters discussed within this report include forward-looking statements.        These        statements may be identified by the use of forward-looking terminology such        as“anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,”“may,” “might,” “plan,” “potential,” “predict,” “should,” or “will,” or the        negative thereof or other variations thereon or comparable terminology. In        particular, statements about our expectations, beliefs, plans, objectives,        assumptions or future events or performance contained in this report are        forward-looking statements. We have based these forward-looking statements        on        our current expectations, assumptions, estimates and projections. While we        believe these expectations, assumptions, estimates and projections are        reasonable, such forward-looking statements are only predictions and involve        known and unknown risks and uncertainties, many of which are beyond our control.        These and other important factors may cause our actual results, performance        or        achievements to differ materially from any future results, performance or        achievements expressed or implied by these forward-looking        statements.*

**General**

**Results        of Operations**

|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **Three                  Months Ended** |   |   | **Nine                  Months Ended** |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|--------|--------|----------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **September                  30,**      |   |   | **September                  30,**     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **2007**                                |   |   | **2006**                               |   |   | **2007** |   |   | **2006** |   |
| Production                  revenues (in thousands):                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                   |   |   |   |   |   |   |   |
| Gas                                                                                                                                          |   | $                                       | 3,156  |   |                                   | $      | 4,304 |   |   | $ | 10,485 |   |   | $ | 6,983 |   |
| Oil                                                                                                                                          |   | $                                       | 69     |   |                                   | $      | 33 |   |   | $ | 159 |   |   | $ | 36 |   |
| Total                                                                                                                                        |   | $                                       | 3,225  |   |                                   | $      | 4,337 |   |   | $ | 10,644 |   |   | $ | 7,019 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Production                  volumes:                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Gas                  (mcf/day)                  (2)                                                                                          |   |                                    | 3,789  |   |                                   |   | 6,019 |   |   |   | 4,319 |   |   |   | 3,239 |   |
| Oil                  (bbls/day)                  (2)                                                                                         |   |                                    | 12     |   |                                   |   | 5 |   |   |   | 10 |   |   |   | 2 |   |
| Total                  (mcfe/day)                  (2)                                                                                       |   |                                    | 3,861  |   |                                   |   | 6,049 |   |   |   | 4,379 |   |   |   | 3,251 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Average                  sales prices:                                                                                                                                                                                                                                                                                                                                                                                                         |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Gas                  (per mcf) (1)                  (2)                                                                                      |   | $                                       | 9.05   |   |                                   | $      | 7.77 |   |   | $ | 8.89 |   |   | $ | 7.90 |   |
| Oil                  (per bbl)                  (2)                                                                                          |   | $                                       | 60.25  |   |                                   | $      | 68.83 |   |   | $ | 57.12 |   |   | $ | 68.55 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Average                  production costs:                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| As                  a percent of                  sales                                                                                      |   |                                    | 20     | %      |                                   |   | 14 | % |   |   | 19 | % |   |   | 14 | % |
| Per                  mcfe                  (2)                                                                                               |   | $                                       | 1.79   |   |                                   | $      | 1.13 |   |   | $ | 1.71 |   |   | $ | 1.13 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Depletion                  per                  mcfe                                                                |   | $                                       | 4.53   |   |                                   | $      | 3.35 |   |   | $ | 4.56 |   |   | $ | 3.36 |   |

| (1)   | The                  average sales price per mcf before the effects of hedging was $8.14                  and                  $7.11 for the three months ended September 30, 2007 and 2006,                  respectively; and $7.92 and $7.44 for the nine months ended September                  30,                  2007 and 2006, respectively. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (2)   | “Mcf”                  means thousand cubic feet, “mcfe” means thousand cubic feet equivalent and                  “bbls” means barrels.  Bbls are converted to mcfe using the                  ratio of six mcfs to one bbl. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

**Natural        Gas Revenues**

**Oil        Revenues**

**Expenses.  **

**Liquidity        and Capital Resources**

**Critical        Accounting Policies**

**Subordination        by Managing General Partner**

**Recently        Issued Financial Accounting Standards**

*Offsetting        of Amounts Related to Certain Contracts*

*The Fair Value Option for Financial Assets and Financial        Liabilities*

*Fair Value *
*Measurement*

**ITEM        3.  CONTROLS AND PROCEDURES**

**PART        II.                      OTHER        INFORMATION**

**ITEM        6.  Exhibits**

**EXHIBIT        INDEX**

| **Exhibit                  No.** |   | **Description**                                                                                                                                                           |
|----------------------------------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                             |   |                                                                                                                                                                      |
| 31.1                             |   | Certification                  Pursuant to Rule 13a-14/15(d)-14                                                                                                           |
| 31.2                             |   | Certification                  Pursuant to Rule 13a-14/15(d)-14                                                                                                           |
| 32.1                             |   | Certification                  Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section                  906 of                  the Sarbanes-Oxley Act of 2002 |
| 32.2                             |   | Certification                  Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section                  906 of                  the Sarbanes-Oxley Act of 2002 |

**SIGNATURES**

| Pursuant                  to the requirements of the Securities of the Exchange Act of 1934,                  the                  registrant has duly caused this report to be signed on its behalf                  by the                  undersigned, thereunto duly authorized. |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                                                  |
|                                                                                                                                                                                                                                                                                  |   |   |
|                                                                                                                                                                                                                                                                                  |   |   |
| Atlas                  America Public #15-2005 (A) L.P.                                                                                                                                                                                                                               |
|                                                                                                                                                                                                                                                                                  |   |   |
|                                                                                                                                                                                                                                                                                  |   | Atlas                  Resources, LLC, Managing General Partner |
|                                                                                                                                                                                                                                                                                  |   |   |
| Date:  November                  9, 2007                                                                                                                                                                                                                                    |   | By:/s/                  Freddie M. Kotek |
|                                                                                                                                                                                                                                                                                  |   | Freddie                  M. Kotek, Chairman of the Board of Directors, Chief Executive                  Officer |
|                                                                                                                                                                                                                                                                                  |   | and                  President |
|                                                                                                                                                                                                                                                                                  |   |   |
|                                                                                                                                                                                                                                                                                  |   |   |
| In                  accordance with the Exchange Act, this report has been signed by                  the                  following persons on behalf of the registrant and in the capacities                  and on                  the dates indicated.                          |
|                                                                                                                                                                                                                                                                                  |
|                                                                                                                                                                                                                                                                                  |   |   |
|                                                                                                                                                                                                                                                                                  |   |   |
| Date:  November                  9, 2007                                                                                                                                                                                                                                    |   | By:/s/                  Freddie M. Kotek |
|                                                                                                                                                                                                                                                                                  |   | Freddie                  M. Kotek, Chairman of the Board of Directors, Chief                  Executive |
|                                                                                                                                                                                                                                                                                  |   | Officer                  and President |
|                                                                                                                                                                                                                                                                                  |   |   |
|                                                                                                                                                                                                                                                                                  |   |   |
| Date:  November                  9, 2007                                                                                                                                                                                                                                    |   | By:/s/                  Matthew A. Jones |
|                                                                                                                                                                                                                                                                                  |   | Matthew                  A. Jones, Chief Financial Officer |
|                                                                                                                                                                                                                                                                                  |   |   |
|                                                                                                                                                                                                                                                                                  |   |   |
| Date:  November                  9, 2007                                                                                                                                                                                                                                    |   | By:/s/                  Nancy J. McGurk |
|                                                                                                                                                                                                                                                                                  |   | Nancy                  J. McGurk, Vice President, Chief Accounting Officer |
|                                                                                                                                                                                                                                                                                  |   |   |