|                                                                                                                                                                                    | **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 June 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 June 30, 2007 and December 31, 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 3        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Statements                  of Net Earnings for the Three Months and Six Months ended June                  30, 2007                  and 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | 4        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Statement                  of Partners’ Capital Accounts for the Six Months ended June 30,                  2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5        |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Statements                  of Cash Flows for the Six Months ended June 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**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | **June                  30,** |       |   | **December                  31,** |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------------|------------|--------|-----------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | **2007**                      |       |   | **2006**                          |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | **(Unaudited)**               |       |   | **(Audited)**                     |   |
| **ASSETS**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                          |       |   |                              |   |
| Current                  Assets:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                          |       |   |                              |   |
| Cash                  and cash                  equivalents                                                                                                                |   | $                             | 1,018,700  |   |                              | $      | 1,238,300 |   |
| Accounts                  receivable-affiliate                                                                                                                             |   |                          | 2,779,500  |   |                              |   | 3,218,100 |   |
| Short-term                  hedge receivable due from                  affiliate                                                                                           |   |                          | 1,213,400  |   |                              |   | 2,613,800 |   |
| Total                  current                  assets                                                                                                                                                             |   |                          | 5,011,600  |   |                              |   | 7,070,200 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                          |       |   |                              |   |   |   |
| Oil                  and gas properties,                  net                                                                                                              |   |                          | 52,977,900 |   |                              |   | 56,327,400 |   |
| Long-term                  hedge receivable due from                  affiliate                                                                                            |   |                          | 639,600    |   |                              |   | 2,256,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | $                             | 58,629,100 |   |                              | $      | 65,654,100 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                          |       |   |                              |   |   |   |
| **LIABILITIES                  AND PARTNERS’ CAPITAL**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                          |       |   |                              |   |   |   |
| Current                  liabilities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |                          |       |   |                              |   |   |   |
| Accrued                  liabilities                                                                                                                                       |   | $                             | 6,200      |   |                              | $      | 18,000 |   |
| Short-term                  hedge liability due to                  affiliate                                                                                              |   |                          | 121,900    |   |                              |   | 16,300 |   |
| Total                  current                  liabilities                                                                                                                                                   |   |                          | 128,100    |   |                              |   | 34,300 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                          |       |   |                              |   |   |   |
| Asset                  retirement                  obligation                                                                                                              |   |                          | 1,290,800  |   |                              |   | 1,253,200 |   |
| Long-term                  hedge liability due to                  affiliate                                                                                               |   |                          | 1,425,500  |   |                              |   | 363,000 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                          |       |   |                              |   |   |   |
| Partners’                  capital:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                          |       |   |                              |   |   |   |
| Managing                  general                  partner                                                                                                                 |   |                          | 11,980,300 |   |                              |   | 12,334,100 |   |
| Limited                  partners (5,227.40                  units)                                                                                                        |   |                          | 43,713,900 |   |                              |   | 47,509,300 |   |
| Accumulated                  other comprehensive                  income                                                                                                   |   |                          | 90,500     |   |                              |   | 4,160,200 |   |
| Total                  partners'                  capital                                                                                                                                                     |   |                          | 55,784,700 |   |                              |   | 64,003,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | $                             | 58,629,100 |   |                              | $      | 65,654,100 |   |

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

**STATEMENTS        OF NET EARNINGS**

**(Unaudited)**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **Three                  Months Ended** |      |   | **Six                  Months Ended** |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|---------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **June                  30,**           |      |   | **June                  30,**         |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | **2007**                                |      |   | **2006**                              |   |   | **2007** |   |   | **2006** |   |
| **REVENUES:**                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                    |      |   |                                  |   |   |   |   |   |   |   |
| Natural                  gas and                  oil                                                                       |   | $                                       | 3,285,900 |   |                                  | $      | 2,507,200 |   |   | $ | 7,419,100 |   |   | $ | 2,681,400 |   |
| Interest                  income                                                                                            |   |                                    | 8,000     |   |                                  |   | 100 |   |   |   | 16,100 |   |   |   | 100 |   |
| Total                  revenues                                                                                                                                     |   |                                    | 3,293,900 |   |                                  |   | 2,507,300 |   |   |   | 7,435,200 |   |   |   | 2,681,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                    |      |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| **COSTS                  AND EXPENSES:**                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                    |      |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Production                                                                                                                  |   |                                    | 703,100   |   |                                  |   | 351,900 |   |   |   | 1,414,700 |   |   |   | 378,800 |   |
| Depletion                                                                                                                   |   |                                    | 1,703,300 |   |                                  |   | 1,061,700 |   |   |   | 3,836,300 |   |   |   | 1,119,700 |   |
| Accretion                  of asset retirement obligation                                                                                                                                                                                                                                                                                                                                                                                              |   |                                    | 18,800    |   |                                  |   | 31,000 |   |   |   | 37,600 |   |   |   | 33,000 |   |
| General                  and                  administrative                                                                |   |                                    | 58,300    |   |                                  |   | 36,700 |   |   |   | 108,000 |   |   |   | 49,600 |   |
| Total                  expenses                                                                                                                                     |   |                                    | 2,483,500 |   |                                  |   | 1,481,300 |   |   |   | 5,396,600 |   |   |   | 1,581,100 |   |
| **Net                  earnings                                                               **                            |   | $                                       | 810,400   |   |                                  | $      | 1,026,000 |   |   | $ | 2,038,600 |   |   | $ | 1,100,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                    |      |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| **Allocation                  of net earnings:**                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                    |      |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Managing                  general                  partner                                                                  |   | $                                       | 645,500   |   |                                  | $      | 598,600 |   |   | $ | 1,567,000 |   |   | $ | 634,600 |   |
| Limited                  partners                                                                                           |   | $                                       | 164,900   |   |                                  | $      | 427,400 |   |   | $ | 471,600 |   |   | $ | 465,800 |   |
| Net                  earnings per limited partnership unit                                                                                                                                                                                                                                                                                                                                                                                             |   | $                                       | 31        |   |                                  | $      | 82 |   |   | $ | 90 |   |   | $ | 89 |   |

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

**STATEMENT        OF PARTNERS’ CAPITAL ACCOUNTS**

**FOR        THE SIX MONTHS ENDED June 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                                                                                          |   |         | 2,165,800  |   |         |   | 3,838,600  |                               |   |   | —    |   |   |   | 6,004,400 |   |
| Interest                  income                                                                                                                   |   |         | 5,800      |   |         |   | 10,300     |                               |   |   | —    |   |   |   | 16,100 |   |
| Depletion                                                                                                                                          |   |         | (552,100   | )      |         |   | (3,284,200 | )                                  |   |   | —    |   |   |   | (3,836,300 | ) |
| Accretion                  of asset retirement obligation                                                                                                                                                                                                                                                                                                                                                         |   |         | (13,600    | )      |         |   | (24,000    | )                                  |   |   | —    |   |   |   | (37,600 | ) |
| General                  and                  administrative                                                                                       |   |         | (38,900    | )      |         |   | (69,100    | )                                  |   |   | —    |   |   |   | (108,000 | ) |
| Net                  earnings                                                                                                                                          |   |         | 1,567,000  |   |         |   | 471,600    |                               |   |   | —    |   |   |   | 2,038,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| Other                  comprehensive                  loss                                                           |   |         | —    |   |         |   | —    |                               |   |   | (4,069,700 | )      |   |   | (4,069,700 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| MGP                  adjusted asset contributions                                                                                                                                                                                                                                                                                                                                                                 |   |         | 486,700    |   |         |   | —    |                               |   |   | —    |   |   |   | 486,700 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| Distributions                  to                  partners                                                          |   |         | (2,407,500 | )      |         |   | (4,267,000 | )                                  |   |   | —    |   |   |   | (6,674,500 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |         |       |   |         |   |       |                               |   |   |       |   |   |   |   |   |
| **Balance                  at June 30, 2007**                                                                                                                                                                                                                                                                                                                                                                     |   | $            | 11,980,300 |   |         | $      | 43,713,900 |                               |   | $      | 90,500     |   |   | $ | 55,784,700 |   |

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

**STATEMENTS        OF CASH FLOWS**

**(Unaudited)**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **Six                  Months Ended** |       |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------------------------------|------------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **June                  30,**         |       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **2007**                              |       |   | **2006** |   |
| **Cash                  flows from operating activities:**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                  |       |   |   |   |
| Net                  earnings                                                                                                                                                              |   | $                                     | 2,038,600  |   |   | $ | 1,100,400 |   |
| Adjustments                  to reconcile net earnings to net cash provided by (used in) operating                  activities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |                                  |       |   |   |   |   |   |
| Depletion                                                                                                                                                                                  |   |                                  | 3,836,300  |   |   |   | 1,119,700 |   |
| Non-cash                  loss on derivative                  value                                                                                                                        |   |                                  | 115,700    |   |   |   | — |   |
| Accretion                  of asset retirement                  obligation                                                                                                                 |   |                                  | 37,600     |   |   |   | 33,000 |   |
| Decrease                  (increase) in accounts                  receivable-affiliate                                                                                                     |   |                                  | 438,600    |   |   |   | (2,051,800 | ) |
| Decrease                  in accrued                  liabilities                                                                                                                          |   |                                  | (11,800    | ) |   |   | (2,169,400 | ) |
| Net                  cash provided by (used in) operating                  activities                                                                                                      |   |                                  | 6,455,000  |   |   |   | (1,968,100 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                  |       |   |   |   |   |   |
| **Cash                  flows from financing activities:**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                  |       |   |   |   |   |   |
| Return                  of initial capital contributions to                  MGP                                                                                                           |   |                                  | (100       | ) |   |   | — |   |
| Distributions                  to                  partners                                                                                                                                |   |                                  | (6,674,500 | ) |   |   | — |   |
| Net                  cash used in financing                  activities                                                                                                                    |   |                                  | (6,674,600 | ) |   |   | — |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                  |       |   |   |   |   |   |
| Net                  decrease in cash and cash                  equivalents                                                                                                                |   |                                  | (219,600   | ) |   |   | (1,968,100 | ) |
| Cash                  and cash equivalents at beginning of                  period                                                                                                         |   |                                  | 1,238,300  |   |   |   | 2,168,100 |   |
| Cash                  and cash equivalents at end of                  period                                                                                                               |   | $                                     | 1,018,700  |   |   | $ | 200,000 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                  |       |   |   |   |   |   |
| **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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | $                                     | (160,600   | ) |   | $ | 12,235,600 |   |
| Lease                  costs included in oil and gas                  properties                                                                                                                                    |   |                                  | —    |   |   |   | 1,332,100 |   |
| Intangible                  drilling costs included in oil and gas properties                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                  | 647,400    |   |   |   | — |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | $                                     | 486,800    |   |   | $ | 13,567,700 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                  |       |   |   |   |   |   |
| Asset                  retirement                  obligation                                                                                                                                                       |   | $                                     | —    |   |   | $ | 963,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                  |       |   |   |   |   |   |
| Additional                  asset contributions:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                  |       |   |   |   |   |   |
| Tangible                  equipment/leasehold and intangible drilling                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | $                                     | —    |   |   | $ | 50,918,800 |   |

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

**NOTES        TO FINANCIAL STATEMENTS**

**June        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)**

**June        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** |      |   | **Six                  Months Ended** |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|---------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **June                  30,**           |      |   | **June                  30,**         |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **2007**                                |      |   | **2006**                              |   |   | **2007** |   |   | **2006** |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |      |   |                                  |   |   |   |   |   |   |   |
| Asset                  retirement obligation at beginning of period                                                                                                                                                                                                                                                                                                                                                                            |   | $                                       | 1,272,000 |   |                                  | $      | 137,900 |   |   | $ | 1,253,200 |   |   | $ | 135,900 |   |
| Liabilities                  incurred from drilling wells                                                                                                                                                                                                                                                                                                                                                                                      |   |                                    | —   |   |                                  |   | 963,500 |   |   |   | — |   |   |   | 963,500 |   |
| Accretion                  expense                                                                   |   |                                    | 18,800    |   |                                  |   | 31,000 |   |   |   | 37,600 |   |   |   | 33,000 |   |
| Asset                  retirement obligation at end of period                                                                                                                                                                                                                                                                                                                                                                                  |   | $                                       | 1,290,800 |   |                                  | $      | 1,132,400 |   |   | $ | 1,290,800 |   |   | $ | 1,132,400 |   |

**Property        and Equipment**

| Oil                  and gas properties consist of the following at the dates                  indicated:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | **June                  30,** |       |   | **December                  31,** |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------------|------------|--------|-----------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | **2007**                      |       |   | **2006**                          |   |
| Mineral                  interest in properties:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |                          |       |   |                              |   |
| Proved                  properties                                                                                                                                                  |   | $                             | 1,535,000  |   |                              | $      | 1,535,000 |   |
| Wells                  and related                  equipment                                                                                                                       |   |                          | 60,553,200 |   |                              |   | 60,066,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                          | 62,088,200 |   |                              |   | 61,601,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                          |       |   |                              |   |   |   |
| Accumulated                  depletion of oil and gas                  properties                                                                                                   |   |                          | (9,110,300 | )      |                              |   | (5,274,000 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | $                             | 52,977,900 |   |                              | $      | 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)**

**June        30, 2007**

**(Unaudited)**

**NOTE        2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (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                  six months ended June 30, 2007 were $39,200 and $77,500,                  respectively.  Administrative costs incurred for the three                  months and six months ended June 30, 2006 were $20,500 and $22,900,                  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.  Administrative costs incurred for the three months and                  six months ended June 30, 2007 were $149,200 and $294,600                  respectively.  Well supervision fees incurred for the three                  months and six months ended June 30, 2006 were $77,900 and $86,900,                  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.  Administrative costs incurred for the three months and                  six months ended June 30, 2007 were $463,500 and $922,000                  respectively.  Transportation fees incurred for the three months                  and six months ended June 30, 2006 were $241,200 and $257,700,                  respectively. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Asset                  contributions from the MGP, which are reported in the Partnership's                  Statement of Cash Flows as a non-cash activity for the six the                  six months                  ended June 30, 2007 and June 30, 2006, were $486,800 and                  $13,567,700. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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

**NOTES        TO FINANCIAL STATEMENTS (Continued)**

**June        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** |      |   | **Six                  Months Ended** |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|-----------|--------|---------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | **June                  30,**           |      |   | **June                  30,**         |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | **2007**                                |      |   | **2006**                              |   |   | **2007** |   |   | **2006** |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                    |      |   |                                  |   |   |   |   |   |   |   |
| Net                  earnings                                                                                             |   | $                                       | 810,400   |   |                                  | $      | 1,026,000 |   |   | $ | 2,038,600 |   |   | $ | 1,100,400 |   |
| Other                  comprehensive (loss) income:                                                                                                                                                                                                                                                                                                                                                                                   |   |                                    |      |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Unrealized                  holding gain (loss) on hedging contracts                                                                                                                                                                                                                                                                                                                                                                  |   |                                    | 664,800   |   |                                  |   | 146,200 |   |   |   | (3,242,800 | ) |   |   | 145,600 |   |
| Less:                  reclassification adjustment for gains realized in net                  earnings                                                                                                                                                                                                                                                                                                                                |   |                                    | (363,400  | )      |                                  |   | (36,000 | ) |   |   | (826,900 | ) |   |   | (36,000 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                    | 301,400   |   |                                  |   | 110,200 |   |   |   | (4,069,700 | ) |   |   | 109,600 |   |
| Comprehensive                  income                  (loss)                                                             |   | $                                       | 1,111,800 |   |                                  | $      | 1,136,200 |   |   | $ | (2,031,100 | ) |   | $ | 1,210,000 |   |

**NOTE        5 – DERIVATIVE INSTRUMENTS**

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

**NOTES        TO FINANCIAL STATEMENTS (Continued)**

**June        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)**                 |       |
|                                   | **June                  30,**      |   | ** **                       | **(1)**   |   |                             | **(per                  MMBTU)** |   |                            | ** ** | **(2)** |   |
|                                   |                               |   |                             |      |   |                             |                             |   |                            |       |   |   |
|                                   | 2008                               |   |                             | 1,297,300 |   |                             | $                                | 8.682  |                            |       | $ | 1,068,900 |   |
|                                   | 2009                               |   |                             | 1,268,700 |   |                             | $                                | 8.533  |                            |       |   | (7,700 | ) |
|                                   | 2010                               |   |                             | 982,600   |   |                             | $                                | 8.053  |                            |       |   | (302,300 | ) |
|                                   | 2011                               |   |                             | 548,500   |   |                             | $                                | 7.524  |                            |       |   | (300,400 | ) |
|                                   | 2012                               |   |                             | 190,800   |   |                             | $                                | 7.365  |                            |       |   | (75,800 | ) |
|                                   |                               |   |                             |      |   |                             |                             |   |                            |       | $ | 382,700 |   |

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

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

**June        30, 2007**

**(Unaudited)**

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

| **Costless                  Collars** |                               |                            |   |                             |    |   |                                 |                             |   |                            |       |
|---------------------------------------|------------------------------------|---------------------------------|--------|----------------------------------|---------|--------|--------------------------------------|----------------------------------|--------|---------------------------------|------------|
|                                  |                               |                            |   |                             |    |   |                                 |                             |   | **Fair                  Value** |       |
| **Company**                           | **Twelve                  Month**  |                            |   | **Volumes**                      |    |   | **Average**                          |                             |   | **Asset**                       |       |
|                                  | **Period                  Ending** | **Option**                      |   | **(per                  MMBTU)** |    |   | **Floor                  & Cap** |                             |   | **(Liability)**                 |       |
|                                  | **June                  30,**      | **Type**                        |   | ** **                       | **(1)** |   |                                 | **(per                  MMBTU)** |   |                            | ** ** | **(2)** |   |
|                                  |                               |                            |   |                             |    |   |                                 |                             |   |                            |       |   |   |
|                                  | 2008                               | Puts                  purchased |   |                             | 71,500  |   |                                 | $                                | 7.500  |                            |       | $ | 30,500 |   |
|                                  | 2008                               | Calls                  sold     |   |                             | 71,500  |   |                                 | $                                | 8.600  |                            |       |   | — |   |
|                                  | 2008                               | Puts                  purchased |   |                             | 62,000  |   |                                 | $                                | 7.500  |                            |       |   | — |   |
|                                  | 2008                               | Calls                  sold     |   |                             | 62,000  |   |                                 | $                                | 9.400  |                            |       |   | (7,900 | ) |
|                                  | 2009                               | Puts                  purchased |   |                             | 62,000  |   |                                 | $                                | 7.500  |                            |       |   | — |   |
|                                  | 2009                               | Calls                  sold     |   |                             | 62,000  |   |                                 | $                                | 9.400  |                            |       |   | (8,800 | ) |
|                                  | 2010                               | Puts                  purchased |   |                             | 114,500 |   |                                 | $                                | 7.750  |                            |       |   | — |   |
|                                  | 2010                               | Calls                  sold     |   |                             | 114,500 |   |                                 | $                                | 8.750  |                            |       |   | (29,400 | ) |
|                                  | 2011                               | Puts                  purchased |   |                             | 114,500 |   |                                 | $                                | 7.750  |                            |       |   | 100 |   |
|                                  | 2011                               | Calls                  sold     |   |                             | 114,500 |   |                                 | $                                | 8.750  |                            |       |   | — |   |
|                                  | 2011                               | Puts                  purchased |   |                             | 286,200 |   |                                 | $                                | 7.500  |                            |       |   | — |   |
|                                  | 2011                               | Calls                  sold     |   |                             | 286,200 |   |                                 | $                                | 8.450  |                            |       |   | (68,000 | ) |
|                                  | 2012                               | Puts                  purchased |   |                             | 286,200 |   |                                 | $                                | 7.500  |                            |       |   | 6,400 |   |
|                                  | 2012                               | Calls                  sold     |   |                             | 286,200 |   |                                 | $                                | 8.450  |                            |       |   | — |   |
|                                  |                               |                            |   |                             |    |   |                                 |                             |   |                            |       | $ | (77,100 | ) |
|                                  |                               |                            |   |                             |    |   |                                 |                             |   |                            |       |   |   |   |
|                                  |                               |                            |   |                             |    |   |                                 | Net                  Asset       |   |                            | $          | 305,600 |   |

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

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

|                                                                                                                                                                                                                                                                                                            |   | **June                  30, 2007** |       |   | **December                  31, 2006** |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------|------------|--------|----------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                            |   | **Book                  Value**    |       |   | **Fair                  Value**        |   |   | **Book                  Value** |   |   | **Fair                  Value** |   |
| Assets                                                                                                                                                                                                                                                                                                          |   |                               |       |   |                                   |   |   |   |   |   |   |   |
| Derivative                  instruments                                             |   | $                                  | 1,853,000  |   |                                   | $      | 1,853,000 |   |   | $ | 4,870,300 |   |   | $ | 4,870,300 |   |
|                                                                                                                                                                                                                                                                                                            |   | $                                  | 1,853,000  |   |                                   | $      | 1,853,000 |   |   | $ | 4,870,300 |   |   | $ | 4,870,300 |   |
| Liabilities                                                                                                                                                                                                                                                                                                     |   |                               |       |   |                                   |   |   |   |   |   |   |   |   |   |   |   |
| Derivative                  instruments                                             |   | $                                  | (1,547,400 | )      |                                   | $      | (1,547,400 | ) |   | $ | (379,300 | ) |   | $ | (379,300 | ) |
|                                                                                                                                                                                                                                                                                                            |   | $                                  | 305,600    |   |                                   | $      | 305,600 |   |   | $ | 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** |   |   | **Six                  Months Ended** |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------|--------|--------|---------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **June                  30,**           |   |   | **June                  30,**         |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | **2007**                                |   |   | **2006**                              |   |   | **2007** |   |   | **2006** |   |
| Production                  revenues (in thousands):                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                  |   |   |   |   |   |   |   |
| Gas                                                                                                                                          |   | $                                       | 3,253  |   |                                  | $      | 2,505 |   |   | $ | 7,329 |   |   | $ | 2,679 |   |
| Oil                                                                                                                                          |   | $                                       | 33     |   |                                  | $      | 3 |   |   | $ | 90 |   |   |   | 3 |   |
| Total                                                                                                                                        |   | $                                       | 3,286  |   |                                  | $      | 2,508 |   |   | $ | 7,419 |   |   | $ | 2,682 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Production                  volumes:                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Gas                  (mcf/day)                  (2)                                                                                          |   |                                    | 4,020  |   |                                  |   | 3,429 |   |   |   | 4,588 |   |   |   | 1,826 |   |
| Oil                  (bbls/day)                  (2)                                                                                         |   |                                    | 6      |   |                                  |   | 1 |   |   |   | 9 |   |   |   | 1 |   |
| Total                  (mcfe/day)                  (2)                                                                                       |   |                                    | 4,056  |   |                                  |   | 3,435 |   |   |   | 4,642 |   |   |   | 1,832 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Average                  sales prices:                                                                                                                                                                                                                                                                                                                                                                                                         |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Gas                  (per mcf) (1)                  (2)                                                                                      |   | $                                       | 8.89   |   |                                  | $      | 8.03 |   |   | $ | 8.83 |   |   | $ | 8.11 |   |
| Oil                  (per bbl)                  (2)                                                                                          |   | $                                       | 59.16  |   |                                  | $      | 65.51 |   |   | $ | 54.95 |   |   | $ | 65.51 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Average                  production costs:                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| As                  a percent of                  sales                                                                                      |   |                                    | 21     | %      |                                  |   | 14 | % |   |   | 19 | % |   |   | 14 | % |
| Per                  mcfe                  (2)                                                                                               |   | $                                       | 1.91   |   |                                  | $      | 1.13 |   |   | $ | 1.68 |   |   | $ | 1.15 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                    |   |   |                                  |   |   |   |   |   |   |   |   |   |   |   |
| Depletion                  per                  mcfe                                                                |   | $                                       | 4.61   |   |                                  | $      | 3.40 |   |   | $ | 4.57 |   |   | $ | 3.39 |   |

| (1)   | The                  average sales price per mcf before the effects of hedging was $7.90                  and                  $7.91 for the three months ended June 30, 2007 and 2006, respectively;                  and                  $7.83 and $8.00 for the six months ended June 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. |
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| Atlas                  America Public #15-2005 (A) L.P.                                                                                                                                                                                                                               |
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|                                                                                                                                                                                                                                                                                  |   | Atlas                  Resources, LLC, Managing General Partner |
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| Date:  August                  14, 2007                                                                                                                                                                                                                                     |   | By:/s/                  Freddie M. Kotek |
|                                                                                                                                                                                                                                                                                  |   | Freddie                  M. Kotek, Chairman of the Board of Directors, Chief Executive                  Officer |
|                                                                                                                                                                                                                                                                                  |   | and                  President |
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| 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.                          |
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| Date:  August                  14, 2007                                                                                                                                                                                                                                     |   | By:/s/                  Freddie M. Kotek |
|                                                                                                                                                                                                                                                                                  |   | Freddie                  M. Kotek, Chairman of the Board of Directors, Chief                  Executive |
|                                                                                                                                                                                                                                                                                  |   | Officer                  and President |
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| Date:  August                  14, 2007                                                                                                                                                                                                                                     |   | By:/s/                  Matthew A. Jones |
|                                                                                                                                                                                                                                                                                  |   | Matthew                  A. Jones, Chief Financial Officer |
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| Date:  August                  14, 2007                                                                                                                                                                                                                                     |   | By:/s/                  Nancy J. McGurk |
|                                                                                                                                                                                                                                                                                  |   | Nancy                  J. McGurk, Vice President, Chief Accounting Officer |
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