|                                                                                                                                                 | United      States                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------|
|                                                                                                                                                 |                                                                                                |
|                                                                                                                                                 | Securities      and Exchange Commission                                                             |
|                                                                                                                                                 |                                                                                                |
|                                                                                                                                                 | Washington,      D.C. 20549                                                                         |
|                                                                                                                                                 |                                                                                                |
|                                                                                                                                                 | Form      10 Q                                                                                      |
|                                                                                                                                                 |                                                                                                |
| (Mark      One)                                                                                                                                      |
|                                                                                                                                                 |                                                                                                |
| R                                                                                                                                                    | QUARTERLY      REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF      1934  |
|                                                                                                                                                 |                                                                                                |
|                                                                                                                                                 | For      the quarterly period ended March 31, 2008                                                  |
|                                                                                                                                                 |                                                                                                |
| o                                                                                                                                                    | TRANSITION      REPORT PURSUANT TO 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 Rd. 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 SecuritiesExchange |
| Act      of 1934 during the preceding 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 large accelerated filer, a      non-accelerated filer, or a smaller reporting company.       |
| See      the definitions of "large accelerated filer", "accelerated filer", and      "smaller reporting company" in Rule 12b-2 of the  Exchange      |
| Act      (Check One) Large accelerated filer  ̈ Accelerated filer       ̈      Non-accelerated filer  ̈ Smaller reporting      company R |
|                                                                                                                                                 |
| 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                                                                           |

| PART      I.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | FINANCIAL      INFORMATION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   | PAGE   |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |
| Item      1:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Financial      Statements                                                                                                                                            |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Balance      Sheets as of March 31, 2008 and December 31, 2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |   | 3      |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Statements      of Net Earnings for the Three Months ended March 31, 2008 and      2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |   | 4      |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Statement      of Changes in Partners’ Capital for the Three Months ended March 31,      2008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |   | 5      |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Statements      of Cash Flows for the Three Months ended March 31, 2008 and      2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |   | 6      |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Notes      to Financial      Statements                                                                                                                              |   |   | 7-15   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| Item      2:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Management’s      Discussion and Analysis of Financial Condition and Results of      Operations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |   | 15-18  |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| Item      4:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Controls      and      Procedures                                                                                                                                    |   |   | 19     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| PART      II.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | OTHER      INFORMATION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| Item      1:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Legal      Proceedings                                                                                                                                               |   |   | 19     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| Item      6:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Exhibits                                                                                                                                                             |   |   | 19     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| SIGNATURES                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | 20     |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   |
| CERTIFICATIONS                                                                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | 21-24  |   |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | March      31, |       |   | December      31, |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------|------------|--------|-------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | 2008           |       |   | 2007              |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | (Unaudited)    |       |   | (Audited)         |   |
| ASSETS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |           |       |   |              |   |
| Current      assets:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           |       |   |              |   |
| Cash      and cash      equivalents                                                                                                                |   | $              | 744,900    |   |              | $      | 750,600 |   |
| Accounts      receivable-affiliate                                                                                                                 |   |           | 2,265,700  |   |              |   | 2,439,400 |   |
| Short-term      hedge receivable due from      affiliate                                                                                           |   |           | 8,800      |   |              |   | 894,500 |   |
| Total      current      assets                                                                                                                                                             |   |           | 3,019,400  |   |              |   | 4,084,500 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           |       |   |              |   |   |   |
| Oil      and gas properties,      net                                                                                                              |   |           | 48,999,600 |   |              |   | 49,244,300 |   |
| Long-term      hedge receivable due from      affiliate                                                                                            |   |           | 70,600     |   |              |   | 133,800 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | $              | 52,089,600 |   |              | $      | 53,462,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           |       |   |              |   |   |   |
| LIABILITIES      AND PARTNERS’ CAPITAL                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |           |       |   |              |   |   |   |
| Current      liabilities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |           |       |   |              |   |   |   |
| Accrued      liabilities                                                                                                                           |   | $              | 31,000     |   |              | $      | 34,900 |   |
| Short-term      hedge liability due to      affiliate                                                                                              |   |           | 1,699,500  |   |              |   | 21,200 |   |
| Total      current      liabilities                                                                                                                                                   |   |           | 1,730,500  |   |              |   | 56,100 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           |       |   |              |   |   |   |
| Asset      retirement      obligation                                                                                                              |   |           | 1,438,300  |   |              |   | 1,417,000 |   |
| Long-term      hedge liability due to      affiliate                                                                                               |   |           | 1,889,600  |   |              |   | 1,343,900 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           |       |   |              |   |   |   |
| Partners’      capital:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |           |       |   |              |   |   |   |
| Managing      general      partner                                                                                                                 |   |           | 11,121,600 |   |              |   | 10,428,600 |   |
| Limited      partners (5,227.40      units)                                                                                                        |   |           | 39,559,500 |   |              |   | 40,693,300 |   |
| Accumulated      other comprehensive      loss                                                                                                     |   |           | (3,649,900 | )      |              |   | (476,300 | ) |
| Total      partners'      capital                                                                                                                                                     |   |           | 47,031,200 |   |              |   | 50,645,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | $              | 52,089,600 |   |              | $      | 53,462,600 |   |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | Three      Months Ended |      |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|-----------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | March      31,          |      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | 2008                    |      |   | 2007 |   |
| REVENUES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                    |      |   |   |   |
| Natural      gas and      oil                                                                                                                                |   | $                       | 2,738,300 |   |   | $ | 4,133,200 |   |
| Interest      income                                                                                                                                         |   |                    | 1,900     |   |   |   | 8,100 |   |
| Total      revenues                                                                                                                                                                                  |   |                    | 2,740,200 |   |   |   | 4,141,300 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |                    |      |   |   |   |   |   |
| COSTS      AND EXPENSES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |      |   |   |   |   |   |
| Production                                                                                                                                                   |   |                    | 618,800   |   |   |   | 711,600 |   |
| Depletion                                                                                                                                                    |   |                    | 1,307,800 |   |   |   | 2,133,000 |   |
| Accretion      of asset retirement      obligation                                                                                                           |   |                    | 21,300    |   |   |   | 18,800 |   |
| General      and      administrative                                                                                                                         |   |                    | 61,700    |   |   |   | 49,700 |   |
| Total      expenses                                                                                                                                                                                  |   |                    | 2,009,600 |   |   |   | 2,913,100 |   |
| Net      earnings                                                                                                                                            |   | $                       | 730,600   |   |   | $ | 1,228,200 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |                    |      |   |   |   |   |   |
| Allocation      of net earnings:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                    |      |   |   |   |   |   |
| Managing      general      partner                                                                                                                           |   | $                       | 517,500   |   |   | $ | 921,500 |   |
| Limited      partners                                                                                                                                        |   | $                       | 213,100   |   |   | $ | 306,700 |   |
| Net      earnings per limited partnership      unit                                                                                                          |   | $                       | 41        |   |   | $ | 59 |   |

|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       | Accumulated   |   |   |       |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------|------------|--------|----------|--------|------------|---------------|--------|--------|------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                       |   | Managing |       |   |     |   |       | Other         |   |   |       |   |
|                                                                                                                                                                                                                                                                                                                                                                                       |   | General  |       |   | Limited  |   |       | Comprehensive |   |   |       |   |
|                                                                                                                                                                                                                                                                                                                                                                                       |   | Partner  |       |   | Partners |   |       | Loss          |   |   | Total      |   |
|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       |          |   |   |       |   |
| Balance      at January 1, 2008                                                                                                                                                                                                                                                                                                                                                            |   | $        | 10,428,600 |   |     | $      | 40,693,300 |          |   | $      | (476,300   | )      |   | $ | 50,645,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       |          |   |   |       |   |   |   |   |   |
| Participation      in revenues and expenses:                                                                                                                                                                                                                                                                                                                                               |   |     |       |   |     |   |       |          |   |   |       |   |   |   |   |   |
| Net      production      revenues                                                             |   |     | 743,300    |   |     |   | 1,376,200  |          |   |   | —    |   |   |   | 2,119,500 |   |
| Interest      income                                                                          |   |     | 600        |   |     |   | 1,300      |          |   |   | —    |   |   |   | 1,900 |   |
| Depletion                                                                                     |   |     | (197,300   | )      |     |   | (1,110,500 | )             |   |   | —    |   |   |   | (1,307,800 | ) |
| Accretion      of asset retirement obligation                                                                                                                                                                                                                                                                                                                                              |   |     | (7,500     | )      |     |   | (13,800    | )             |   |   | —    |   |   |   | (21,300 | ) |
| General      and      administrative                                                          |   |     | (21,600    | )      |     |   | (40,100    | )             |   |   | —    |   |   |   | (61,700 | ) |
| Net      earnings                                                                                                 |   |     | 517,500    |   |     |   | 213,100    |          |   |   | —    |   |   |   | 730,600 |   |
|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       |          |   |   |       |   |   |   |   |   |
| Other      comprehensive loss                                                                                                                                                                                                                                                                                                                                                              |   |     | —    |   |     |   | —    |          |   |   | (3,173,600 | )      |   |   | (3,173,600 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       |          |   |   |       |   |   |   |   |   |
| MGP      adjusted asset contributions                                                                                                                                                                                                                                                                                                                                                      |   |     | 935,400    |   |     |   | —    |          |   |   | —    |   |   |   | 935,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       |          |   |   |       |   |   |   |   |   |
| Distributions      to partners                                                                                                                                                                                                                                                                                                                                                             |   |     | (759,900   | )      |     |   | (1,346,900 | )             |   |   | —    |   |   |   | (2,106,800 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                       |   |     |       |   |     |   |       |          |   |   |       |   |   |   |   |   |
| Balance      at March 31, 2008                                                                                                                                                                                                                                                                                                                                                             |   | $        | 11,121,600 |   |     | $      | 39,559,500 |          |   | $      | (3,649,900 | )      |   | $ | 47,031,200 |   |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | Three      Months Ended |       |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|------------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | March      31,          |       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | 2008                    |       |   | 2007 |   |
| Cash      flows from operating activities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                    |       |   |   |   |
| Net      earnings                                                                                                                                                  |   | $                       | 730,600    |   |   | $ | 1,228,200 |   |
| Adjustments      to reconcile net earnings to net cash provided by operating      activities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                    |       |   |   |   |   |   |
| Depletion                                                                                                                                                          |   |                    | 1,307,800  |   |   |   | 2,133,000 |   |
| Non-cash      (gain) loss on derivative      value                                                                                                                 |   |                    | (700       | ) |   |   | 55,100 |   |
| Accretion      of asset retirement      obligation                                                                                                                 |   |                    | 21,300     |   |   |   | 18,800 |   |
| (Decrease)      increase in accounts      receivable-affiliate                                                                                                     |   |                    | 46,000     |   |   |   | (1,269,800 | ) |
| Decrease      (increase) in accrued      liabilities                                                                                                               |   |                    | (3,900     | ) |   |   | 3,100 |   |
| Net      cash provided by operating      activities                                                                                                                |   |                    | 2,101,100  |   |   |   | 2,168,400 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |       |   |   |   |   |   |
| Cash      flows from financing activities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                    |       |   |   |   |   |   |
| Distributions      to      partners                                                                                                                                |   |                    | (2,106,800 | ) |   |   | (3,388,500 | ) |
| Net      cash used in financing      activities                                                                                                                    |   |                    | (2,106,800 | ) |   |   | (3,388,500 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |       |   |   |   |   |   |
| Net      decrease in cash and cash      equivalents                                                                                                                |   |                    | (5,700     | ) |   |   | (1,220,100 | ) |
| Cash      and cash equivalents at beginning of      period                                                                                                         |   |                    | 750,600    |   |   |   | 1,238,300 |   |
| Cash      and cash equivalents at end of      period                                                                                                               |   | $                       | 744,900    |   |   | $ | 18,200 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |       |   |   |   |   |   |
| Supplemental      Schedule of non-cash investing and financing activities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                    |       |   |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |       |   |   |   |   |   |
| Assets      contributed by managing general partner:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |       |   |   |   |   |   |
| Tangible      equipment                                                                                                                                                                     |   | $                       | 192,600    |   |   | $ | — |   |
| Lease      costs                                                                                                                                                                            |   |                    | 22,900     |   |   |   | — |   |
| Intangible      drilling      costs                                                                                                                                                         |   |                    | 719,900    |   |   |   | — |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | $                       | 935,400    |   |   | $ | — |   |

| Oil      and gas properties consist of the following at the dates      indicated:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | March      31, |        |   | December      31, |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------|-------------|--------|-------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | 2008           |        |   | 2007              |   |
| Natural      gas and oil properties:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |           |        |   |              |   |
| Proved      properties:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |           |        |   |              |   |
| Leasehold      interests                                                                                                                                                             |   | $              | 1,535,000   |   |              | $      | 1,512,100 |   |
| Wells      and related      equipment                                                                                                                                                |   |           | 64,483,100  |   |              |   | 63,442,900 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |           | 66,018,100  |   |              |   | 64,955,000 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |           |        |   |              |   |   |   |
| Accumulated      depletion of oil and gas      properties                                                                                                   |   |           | (17,018,500 | )      |              |   | (15,710,700 | ) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | $              | 48,999,600  |   |              | $      | 49,244,300 |   |

| ·   | 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 ended      March 31, 2008 and 2007 were $43,300 and $38,300,      respectively. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Monthly      well supervision fees which are included in production expenses in the      Partnership’s Statements of Net Earnings are payable at $296 and $285 per      well per month in 2008 and 2007, respectively, for operating and      maintaining the wells.  Well supervision fees incurred for the      three months ended March 31, 2008 and 2007 were $170,500 and $145,400,      respectively. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Transportation      fees which are included in production expenses in the Partnership’s      Statements of Net Earnings are generally payable at 13% of the natural gas      sales price.  Transportation fees incurred for the three months      ended March 31, 2008 and 2007 were $361,300 and $458,500,      respectively. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Asset      contributions from the MGP, which are disclosed on the Partnership's      Statements of Cash Flows as a non-cash activity for the three months ended      March 31, 2008, were $935,400. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Three      Months Ended |       |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|------------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | March      31,          |       |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | 2008                    |       |   | 2007 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                    |       |   |   |   |
| Net      earnings                                                                                                                                           |   | $                       | 730,600    |   |   | $ | 1,228,200 |   |
| Other      comprehensive loss:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                    |       |   |   |   |   |   |
| Unrealized      holding loss on hedging      contracts                                                                                                      |   |                    | (2,867,700 | ) |   |   | (3,907,600 | ) |
| Less:      reclassification adjustment for gains realized in net    earnings                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                    | (305,900   | ) |   |   | (463,500 | ) |
| Total      other comprehensive      loss                                                                                                                    |   |                    | (3,173,600 | ) |   |   | (4,371,100 | ) |
| Comprehensive      loss                                                                                                                                     |   | $                       | (2,443,000 | ) |   | $ | (3,142,900 | ) |

| Natural      Gas Fixed Price Swaps |   |             |    |   |             |   |   |                 |   |
|------------------------------------|--------|------------------|---------|--------|------------------|--------|--------|----------------------|--------|
|                               |   |             |    |   |             |   |   |                 |   |
| Production                         |   |             |    |   | Average          |   |   | Fair      Value      |   |
| Period      Ending                 |   | Volumes          |    |   | Fixed      Price |   |   | Asset/               |   |
| December      31,                  |   | (MMbtu)      (1) |    |   | (per      MMbtu) |   |   | (Liability)      (2) |   |
|                               |   |             |    |   |             |   |   |                 |   |
| 2008                               |   |             | 731,200 |   |             | $      | 8.81   |                 |   | $ | (1,051,900 | ) |
| 2009                               |   |             | 904,100 |   |             |   | 8.42   |                 |   |   | (1,123,600 | ) |
| 2010                               |   |             | 531,800 |   |             |   | 7.80   |                 |   |   | (610,700 | ) |
| 2011                               |   |             | 265,900 |   |             |   | 7.51   |                 |   |   | (297,000 | ) |
| 2012                               |   |             | 177,300 |   |             |   | 8.65   |                 |   |   | (5,100 | ) |
| 2013                               |   |             | 44,300  |   |             |   | 8.73   |                 |   |   | (3,500 | ) |
|                               |   |             |    |   |             |   |   |                 |   | $ | (3,091,800 | ) |

| Natural      Gas Costless Collars |   |                |   |             |    |   |                 |   |   |                 |   |
|-----------------------------------|--------|---------------------|--------|------------------|---------|--------|----------------------|--------|--------|----------------------|--------|
|                              |   |                |   |             |    |   |                 |   |   |                 |   |
| Production                        |   |                |   |             |    |   | Average              |   |   | Fair      Value      |   |
| Period      Ending                |   | Option              |   | Volumes          |    |   | Floor      & Cap |   |   | Asset/               |   |
| December      31,                 |   | Type                |   | (MMbtu)      (1) |    |   | (per      MMbtu)     |   |   | (Liability)      (2) |   |
|                              |   |                |   |             |    |   |                 |   |   |                 |   |
| 2008                              |   | Puts      purchased |   |             | 57,600  |   |                 | $      | 7.50   |                 |   | $ | — |   |
| 2008                              |   | Calls      sold     |   |             | 57,600  |   |                 |   | 9.40   |                 |   |   | (70,000 | ) |
| 2010                              |   | Puts      purchased |   |             | 141,800 |   |                 |   | 7.75   |                 |   |   | — |   |
| 2010                              |   | Calls      sold     |   |             | 141,800 |   |                 |   | 8.75   |                 |   |   | (101,200 | ) |
| 2011                              |   | Puts      purchased |   |             | 354,500 |   |                 |   | 7.50   |                 |   |   | — |   |
| 2011                              |   | Calls      sold     |   |             | 354,500 |   |                 |   | 8.45   |                 |   |   | (244,600 | ) |
| 2012                              |   | Puts      purchased |   |             | 35,500  |   |                 |   | 7.00   |                 |   |   | — |   |
| 2012                              |   | Calls      sold     |   |             | 35,500  |   |                 |   | 8.37   |                 |   |   | (31,200 | ) |
|                              |   |                |   |             |    |   |                 |   |   |                 |   | $ | (447,000 | ) |

| Crude      Oil Fixed Price Swaps |   |    |   |   |             |   |   |                 |   |
|----------------------------------|--------|---------|--------|--------|------------------|--------|--------|----------------------|--------|
|                             |   |    |   |   |             |   |   |                 |   |
| Production                       |   |    |   |   | Average          |   |   | Fair      Value      |   |
| Period      Ending               |   | Volumes |   |   | Fixed      Price |   |   | Asset/               |   |
| December      31,                |   | (Bbl)   |   |   | (per      Bbl)   |   |   | (Liability)      (2) |   |
|                             |   |    |   |   |             |   |   |                 |   |
| 2008                             |   |    | 1,600  |   |             | $      | 103.25 |                 |   | $ | 6,100 |   |
| 2009                             |   |    | 1,800  |   |             |   | 99.03  |                 |   |   | 5,800 |   |
| 2010                             |   |    | 1,500  |   |             |   | 96.52  |                 |   |   | 3,800 |   |
| 2011                             |   |    | 1,200  |   |             |   | 95.79  |                 |   |   | 2,500 |   |
| 2012                             |   |    | 1,100  |   |             |   | 95.35  |                 |   |   | 1,700 |   |
| 2013                             |   |    | 300    |   |             |   | 95.35  |                 |   |   | 500 |   |
|                             |   |    |   |   |             |   |   |                 |   | $ | 20,400 |   |

| Crude      Oil Costless Collars |   |                |   |    |   |   |                 |                     |   |                 |   |
|---------------------------------|--------|---------------------|--------|---------|--------|--------|----------------------|--------------------------|--------|----------------------|--------|
|                            |   |                |   |    |   |   |                 |                     |   |                 |   |
| Production                      |   |                |   |    |   |   | Average              |                     |   | Fair      Value      |   |
| Period      Ending              |   | Option              |   | Volumes |   |   | Floor      & Cap |                     |   | Asset/               |   |
| December      31,               |   | Type                |   | (Bbl)   |   |   | (per      Bbl)       |                     |   | (Liability)      (2) |   |
|                            |   |                |   |    |   |   |                 |                     |   |                 |   |
| 2008                            |   | Puts      purchased |   |    | 1,500  |   |                 | $                        | 85.00  |                 |   | $ | 800 |   |
| 2008                            |   | Calls      sold     |   |    | 1,500  |   |                 |                     | 127.13 |                 |   |   | — |   |
| 2009                            |   | Puts      purchased |   |    | 1,800  |   |                 |                     | 85.00  |                 |   |   | 2,500 |   |
| 2009                            |   | Calls      sold     |   |    | 1,800  |   |                 |                     | 118.63 |                 |   |   | — |   |
| 2010                            |   | Puts      purchased |   |    | 1,500  |   |                 |                     | 85.00  |                 |   |   | 2,200 |   |
| 2010                            |   | Calls      sold     |   |    | 1,500  |   |                 |                     | 112.92 |                 |   |   | — |   |
| 2011                            |   | Puts      purchased |   |    | 1,300  |   |                 |                     | 85.00  |                 |   |   | 1,700 |   |
| 2011                            |   | Calls      sold     |   |    | 1,300  |   |                 |                     | 110.81 |                 |   |   | — |   |
| 2012                            |   | Puts      purchased |   |    | 1,100  |   |                 |                     | 85.00  |                 |   |   | 1,200 |   |
| 2012                            |   | Calls      sold     |   |    | 1,100  |   |                 |                     | 110.06 |                 |   |   | — |   |
| 2013                            |   | Puts      purchased |   |    | 300    |   |                 |                     | 85.00  |                 |   |   | 300 |   |
| 2013                            |   | Calls      sold     |   |    | 300    |   |                 |                     | 110.09 |                 |   |   | — |   |
|                            |   |                |   |    |   |   |                 |                     |   |                 |   | $ | 8,700 |   |
|                            |   |                |   |    |   |   |                 |                     |   |                 |   |   |   |   |
|                            |   |                |   |    |   |   |                 | Total      Net Liability |   |                 | $      | (3,509,700 | ) |

| (1)   | MMBTU      represents million British ThermalUnits. |
|-----------------|-----------------------------------------------------|

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

|                                                                                                                                                                                                                                                                                                |   | March      31, 2008 |       |   | December      31, 2007 |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------------|------------|--------|------------------------|--------|
|                                                                                                                                                                                                                                                                                                |   | Book      Value     |       |   | Fair      Value        |   |   | Book      Value |   |   | Fair      Value |   |
| Assets                                                                                                                                                                                                                                                                                              |   |                |       |   |                   |   |   |   |   |   |   |   |
| Derivative      instruments                                             |   | $                   | 79,400     |   |                   | $      | 79,400 |   |   | $ | 1,028,300 |   |   | $ | 1,028,300 |   |
|                                                                                                                                                                                                                                                                                                |   | $                   | 79,400     |   |                   | $      | 79,400 |   |   | $ | 1,028,300 |   |   | $ | 1,028,300 |   |
| Liabilities                                                                                                                                                                                                                                                                                         |   |                |       |   |                   |   |   |   |   |   |   |   |   |   |   |   |
| Derivative      instruments                                             |   | $                   | (3,589,100 | )      |                   | $      | (3,589,100 | ) |   | $ | (1,365,100 | ) |   | $ | (1,365,100 | ) |
|                                                                                                                                                                                                                                                                                                |   | $                   | (3,509,700 | )      |                   | $      | (3,509,700 | ) |   | $ | (336,800 | ) |   | $ | (336,800 | ) |

|                                                                                                                                                                                                                                                                                                                                |   | Fair      Value Measurements at March 31, 2008 Using |    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------------------------|---------|
|                                                                                                                                                                                                                                                                                                                                |   | Quoted      prices                                   |    |   | Significant      other |   |   | Significant |   |
|                                                                                                                                                                                                                                                                                                                                |   | in      active                                       |    |   | observable |   |   | unobservable |   |
|                                                                                                                                                                                                                                                                                                                                |   | markets                                              |    |   | inputs |   |   | inputs |   |
|                                                                                                                                                                                                                                                                                                                                |   | (Level      1)                                       |    |   | (Level      2) |   |   | (Level      3) |   |
|                                                                                                                                                                                                                                                                                                                                |   |                                                 |    |   |   |   |   |   |   |
| Commodity-based      derivatives                                                                                                                                                                                                                                                                                                    |   | $                                                    | — |   |   | $ | (3,509,700 | ) |   | $ | — |   |
|                                                                                                                                                                                                                                                                                                                                |   |                                                 |    |   |   |   |   |   |   |   |   |   |
| Total                                                      |   | $                                                    | — |   |   | $ | (3,509,700 | ) |   | $ | — |   |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | Three      Months Ended |      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|-----------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | March      31,          |      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | 2008                    |      |   | 2007 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                    |      |   |   |   |
| Asset      retirement obligation at beginning of      period                                                                                                      |   | $                       | 1,417,000 |   |   | $ | 1,253,200 |   |
| Accretion      expense                                                                                                                                            |   |                    | 21,300    |   |   |   | 18,800 |   |
| Asset      retirement obligation at end of      period                                                                                                            |   | $                       | 1,438,300 |   |   | $ | 1,272,000 |   |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | Three      Months Ended |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | March      31,          |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | 2008                    |   |   | 2007 |   |
| Production      revenues (in thousands):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |   |   |   |   |
| Gas                                                                                                                                                   |   | $                       | 2,650  |   |   | $ | 4,075 |   |
| Oil                                                                                                                                                   |   | $                       | 88     |   |   | $ | 58 |   |
| Total                                                                                                                                                 |   | $                       | 2,738  |   |   | $ | 4,133 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                    |   |   |   |   |   |   |
| Production      volumes:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                    |   |   |   |   |   |   |
| Gas      (mcf/day)      (2)                                                                                                                           |   |                    | 3,257  |   |   |   | 5,163 |   |
| Oil      (bbls/day)      (2)                                                                                                                          |   |                    | 13     |   |   |   | 12 |   |
| Total      (mcfe/day)      (2)                                                                                                                        |   |                    | 3,335  |   |   |   | 5,235 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                    |   |   |   |   |   |   |
| Average      sales prices:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                    |   |   |   |   |   |   |
| Gas      (per mcf) (1)      (2)                                                                                                                       |   | $                       | 8.94   |   |   | $ | 8.77 |   |
| Oil      (per bbl)      (2)                                                                                                                           |   | $                       | 76.60  |   |   | $ | 52.84 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                    |   |   |   |   |   |   |
| Average      production costs:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                    |   |   |   |   |   |   |
| As      a percent of      sales                                                                                                                       |   |                    | 23     | % |   |   | 17 | % |
| Per      mcfe      (2)                                                                                                                                |   | $                       | 2.04   |   |   | $ | 1.51 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                    |   |   |   |   |   |   |
| Depletion      per      mcfe                                                                                                      |   | $                       | 4.31   |   |   | $ | 4.53 |   |

| (1)   | The      average sales price per mcf before the effects of hedging was $7.91 and      $7.77 for the three months ended March 31, 2008 and 2007,      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. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Exhibit      No. |   | Description                                                                                                                      |
|------------------|--------|----------------------------------------------------------------------------------------------------------------------------------|
|             |   |                                                                                                                             |
|   4.0  |   | Amended      and Restated Certificate and Agreement of Limited Partnership for Atlas      America Public #15-2005 (A) L.P. (1)   |
|  10.1       |   | Drilling      and Operating Agreement for Atlas America Public #15-2005 (A) L.P. (1)                                             |
|  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 |

| (1)   | Filed      on August 9, 2005 in the Form S-1 Registration Statement dated August 9,      2005, File      No. 333-127355. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------|

| Pursuant      to the requirements of the Securities of the Exchange Act of 1934, the      registrant has duly caused this report to be signed on its behalf by the      undersigned, thereunto duly authorized. |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                            |
|                                                                                                                                                                                                            |   |   |
|                                                                                                                                                                                                            |   |   |
| Atlas      America Public #15-2005 (A) L.P.                                                                                                                                                                     |
|                                                                                                                                                                                                            |   |   |
|                                                                                                                                                                                                            |   | Atlas      Resources, LLC, Managing General Partner |
|                                                                                                                                                                                                            |   |   |
| Date:  May      13, 2008                                                                                                                                                                              |   | By:/s/ Freddie M.      Kotek |
|                                                                                                                                                                                                            |   | Freddie      M. Kotek, Chairman of the Board of Directors, Chief Executive      Officer |
|                                                                                                                                                                                                            |   | and      President |
|                                                                                                                                                                                                            |   |   |
|                                                                                                                                                                                                            |   |   |
| In      accordance with the Exchange Act, this report has been signed by the      following persons on behalf of the registrant and in the capacities and on      the dates indicated.                          |
|                                                                                                                                                                                                            |
|                                                                                                                                                                                                            |   |   |
|                                                                                                                                                                                                            |   |   |
| Date:  May      13, 2008                                                                                                                                                                              |   | By:/s/ Freddie M.      Kotek |
|                                                                                                                                                                                                            |   | Freddie      M. Kotek, Chairman of the Board of Directors, Chief    Executive |
|                                                                                                                                                                                                            |   | Officer      and President |
|                                                                                                                                                                                                            |   |   |
|                                                                                                                                                                                                            |   |   |
| Date:  May      13, 2008                                                                                                                                                                              |   | By:/s/ Matthew A.      Jones |
|                                                                                                                                                                                                            |   | Matthew      A. Jones, Chief Financial Officer |
|                                                                                                                                                                                                            |   |   |
|                                                                                                                                                                                                            |   |   |
| Date:  May      13, 2008                                                                                                                                                                              |   | By:/s/ Nancy J.      McGurk |
|                                                                                                                                                                                                            |   | Nancy      J. McGurk, Vice President, Chief Accounting Officer |
|                                                                                                                                                                                                            |   |   |