##### Table of Contents

---

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549



---



FORM 10-Q



---



|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------



For the quarterly period ended June 30, 2005



Or



| ̈ | TRANSITION REPORT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | -------------------------------------------------------------------------------



For the transition period from  to



Commission File No. 333-113340



---



MEWBOURNE ENERGY PARTNERS 05-A, L.P.



---



|                                                         |  |                                        
|-------------------------------------------------------- |  | ---------------------------------------
|Delaware                                                 |  | 20-2306210                             
|(State or jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification Number)



|                                         |  |           
|---------------------------------------- |  | ----------
|3901 South Broadway, Tyler, Texas        |  | 75701     
|(Address of principal executive offices) |  | (Zip code)



Registrants
Telephone Number, including area code: (903) 561-2900



Not Applicable

(Former name, former address and former fiscal year, if changed since last report)



---



Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 of 15(d) of the Securities Exchange 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.    x  Yes ̈No



---



---

##### Table of Contents

Mewbourne Energy Partners 05-A, L.P.

A Development Stage Enterprise



INDEX



|                |  |                                                                                                                                    |  |         
|--------------- |  | ---------------------------------------------------------------------------------------------------------------------------------- |  | --------
|                |  |                                                                                                                                    |  | Page No.
|Part  I        |  | Financial Information                                                                                                              |  |         
|                |  |                                                                                                                                   
|Item 1.         |  | Financial Statements                                                                                                               |  |         
|                |  |                                                                                                                                   
|                |  | Balance Sheet - June 30, 2005 (Unaudited)                                                                                          |  | 3       
|                |  |                                                                                                                                   
|                |  | Statement of Cash Flows (Unaudited) - For the period February 14, 2005 (date of inception) through June 30, 2005                   |  | 4       
|                |  |                                                                                                                                   
|                |  | Statement of Changes In Partners Capital (Unaudited) - For the period February 14, 2005 (date of inception) through June 30, 2005 |  | 5       
|                |  |                                                                                                                                   
|                |  | Notes to Financial Statements                                                                                                      |  | 6       
|                |  |                                                                                                                                   
|Item 2.         |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                                              |  | 7       
|                |  |                                                                                                                                   
|Item 4.         |  | Disclosure Controls and Procedures                                                                                                 |  | 8       
|                |  |                                                                                                                                   
|Part   II      |  | Other Information                                                                                                                  |  |         
|                |  |                                                                                                                                   
|Item 1.         |  | Legal Proceedings                                                                                                                  |  | 8       
|                |  |                                                                                                                                   
|Item 6.         |  | Exhibits and Reports on Form 8-K                                                                                                   |  | 8       



2



---

##### Table of Contents

Mewbourne Energy Partners 05-A, L.P.

A Development Stage Enterprise



Part I  Financial Information



Item 1. Financial Statements



BALANCE SHEET

June 30, 2005 ( Unaudited)



|                        |  |   |    
|----------------------- |  | - | ---
|ASSETS                  |  |   |    
|                        | 
|Cash                    |  | $ | 100
|                        |  |   |    
|Total assets            |  | $ | 100
|                        |  |   |    
|PARTNERS CAPITAL       |  |   |    
|General partners        |  | $ | 100
|Limited partners        |  |   |   
|                        |  |   |    
|Total partners capital |  | $ | 100
|                        |  |   |    



The accompanying notes
are an integral part of the financial statements.





3



---

##### Table of Contents

Mewbourne Energy Partners 05-A, L.P.

A Development Stage Enterprise



STATEMENT OF CASH FLOWS

For the period February 14, 2005 (date of inception)

through June 30, 2005

(Unaudited)



|                                      |  |   |    
|------------------------------------- |  | - | ---
|Cash flows from financing activities: |  |   |    
|Capital contributions from partners   |  | $ | 100
|                                      |  |   |    
|Cash, end of period                   |  | $ | 100
|                                      |  |   |    



The accompanying notes
are an integral part of the financial statements.



4



---

##### Table of Contents

Mewbourne Energy Partners 05-A, L.P.

A Development Stage Enterprise



STATEMENT OF CHANGES IN PARTNERS CAPITAL

For the period February 14, 2005 (date of inception)

through June 30, 2005

(Unaudited)



|                                       |  |                  |     |                  |   |       |  |   |    
|-------------------------------------- |  | ---------------- | --- | ---------------- | - | ----- |  | - | ---
|                                       |  | General Partners |     | Limited Partners |   | Total
|Partners capital at February 14, 2005 |  |                  |     |                  |   |       |  |   |    
|(date of inception)                    |  | $                |    |                  | $ |      |  | $ |   
|Contributions                          |  | $                | 100 |                  | $ |      |  | $ | 100
|                                       |  |                  |     |                  |   |       |  |   |    
|Balance at June 30, 2005               |  | $                | 100 |                  | $ |      |  | $ | 100
|                                       |  |                  |     |                  |   |       |  |   |    



The accompanying notes
are an integral part of the financial statements.





5



---

##### Table of Contents

Mewbourne Energy Partners 05-A, L.P.

A Development Stage Enterprise



NOTES TO FINANCIAL STATEMENTS

(Unaudited)



1. Accounting Policies



In the opinion of
management, the accompanying unaudited financial statements contain all adjustments of a normal recurring nature necessary to present fairly our financial position, cash flows and partners capital for the periods presented.



2. Accounting for Oil and Gas Producing Activities



Mewbourne Energy Partners 05-A, L.P., (the Partnership), a Delaware limited
partnership formed on February 14, 2005, to engage in oil and gas development and production in Texas, Oklahoma, and New Mexico. As of June 30, 2005, the only financial activity which had occurred was the receipt of the organizational contribution
of $100. The offering of limited and general partnership interests began on June 1, 2005. The minimum offering for the partnership is $5,000,000 and the maximum offering for the partnership is $30,000,000. As of August 15, 2005, interests
aggregating $30,000,000 had been sold to 1,128 subscribers of which $26,814,000 were sold to 996 subscribers as general partner interests and $3,186,000 were sold to 132 subscribers as limited partner interests.



3. Financial Statement Presentation



From the period February 14, 2005 to June 30, 2005, the Registrant conducted no business
activity. Therefore, there are no items of income or expense for the period and, accordingly a statement of operations is not provided.



6



---

##### Table of Contents

Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations



Mewbourne Energy Partners 05-A, L.P. (the Partnership) was formed February 14, 2005. Mewbourne Development Corporation (MD) is the Managing
Partner, and has the power and authority to manage, control and administer all partnership affairs. As of June 30, 2005 the only financial activity which had occurred was the receipt of the organizational contribution of $100. The offering of
limited and general partnership interests began on June 1, 2005. The minimum offering for the partnership is $5,000,000 and the maximum offering for the partnership is $30,000,000. As of August 15, 2005, interests aggregating $30,000,000 had been
sold to 1,128 subscribers of which $26,814,000 were sold to 996 subscribers as general partner interests and $3,186,000 were sold to 132 subscribers as limited partner interests.



Liquidity and Capital Resources



Operations will be conducted with available funds and revenues generated from oil and gas activities. No bank borrowing is anticipated.



Results of Operations



The Registrant had not commenced operations prior to the period ended June 30, 2005, therefore, there are no items of income or expense.



7



---

##### Table of Contents

Item 4. Disclosure Controls and Procedures



Mewbourne
Development Corporation (MDC), the Managing General Partner of the Partnership, maintains a system of controls and procedures designed to provide reasonable assurance as to the reliability of the financial statements and other
disclosures included in this report, as well as to safeguard assets from unauthorized use or disposition. Within 90 days prior to the filing of this report, MDCs Chief Executive Officer and Chief Financial Officer have evaluated the
effectiveness of the design and operation of our disclosure controls and procedures with the assistance and participation of other members of management. Based upon that evaluation, MDCs Chief Executive Officer and Chief Financial Officer
concluded that our disclosure controls and procedures are effective for gathering, analyzing and disclosing the information the Partnership is required to disclose in the reports it files under the Securities Exchange Act of 1934 within the time
periods specified in the SECs rules and forms. There have been no significant changes in MDCs internal controls or in other factors which could significantly affect internal controls subsequent to the date MDC carried out its evaluation.



Part II  Other Information



Item 1. Legal Proceedings



None.



Item 6. Exhibits and Reports on Form 8-K



(a) Exhibits filed herewith.



|     |  |                                                                            
|---- |  | ---------------------------------------------------------------------------
|31.1 |  | Certification of CEO Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
|     | 
|31.2 |  | Certification of CFO Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
|     | 
|32.1 |  | Certification of CEO Pursuant to Section 906 of Sarbanes-Oxley Act of 2002.
|     | 
|32.2 |  | Certification of CFO Pursuant to Section 906 of Sarbanes-Oxley Act of 2002.



(b) Reports on Form
8-K



None.



8



---

##### Table of Contents

SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the Partnership has duly caused this report to be signed on its behalf by the undersigned thereto
duly authorized.



Mewbourne Energy Partners 05-A, L.P.By:

Mewbourne Development CorporationManaging General Partner




Date: August 15, 2005



By:

/s/ Alan ClarkAlan Clark, Treasurer




9



---

##### Table of Contents

INDEX TO EXHIBITS



|              |  |                                                                            
|------------- |  | ---------------------------------------------------------------------------
|EXHIBITNUMBER |  | DESCRIPTION                                                                
|31.1          |  | Certification of CEO Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
|              | 
|31.2          |  | Certification of CFO Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
|              | 
|32.1          |  | Certification of CEO Pursuant to Section 906 of Sarbanes-Oxley Act of 2002.
|              | 
|32.2          |  | Certification of CFO Pursuant to Section 906 of Sarbanes-Oxley Act of 2002.



10