Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
WILLIAMS COMPANIES INC
   2. Issuer Name and Ticker or Trading Symbol
Williams Partners L.P. [WPZ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
ONE WILLIAMS CENTER		 3. Date of Earliest Transaction (Month/Day/Year)
03/08/2013
(Street)

TULSA, OK 74172		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common units representing limited partner interests 03/08/2013   P   3,000,000 A $ 47.66 (1) 148,101,606 D (2)  
Common units representing limited partner interests               131,370,638 I See Footnotes (3) (4) (5)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WILLIAMS COMPANIES INC
ONE WILLIAMS CENTER
TULSA, OK 74172		     X    

Signatures

 William H. Gault, Assistant Corporate Secretary, The Williams Companies, Inc.   03/11/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) On March 8, 2013, in conjunction with the closing of a Williams Partners, L.P. ("WPZ") underwritten equity offering, WPZ, pursuant to a Common Unit Purchase Agreement, sold and issued to The Williams Companies, Inc. ("Williams") an aggregate of 3,000,000 common units representing limited partner interests in WPZ (the "Transaction"). The common units were purchased by Williams at a price of $47.66 per common unit which is equal to the price per common unit paid by the underwriters to WPZ in the underwritten equity offering.
(2) Following the Transaction, Williams is the record holder of 148,101,606 common units.
(3) Williams directly or indirectly owns 100% of WGP Gulfstream Pipeline Company, L.L.C. ("WGPG"), Williams Partners GP LLC (the "General Partner"), Williams Partners Holdings LLC ("Holdings"), Williams Energy L.L.C. ("WE"), Williams Discovery Pipeline LLC ("Discovery Pipeline"), and Williams Gas Pipeline Company, LLC ("WGP"). The General Partner is the sole general partner of the Partnership, holding a 2% general partner interest in the Partnership, the incentive distribution rights in the Partnership and common units. WGP is the sole member of WGPG. WGPG directly holds 5,113,334 common units, the General Partner directly holds 3,363,527 common units, Holdings directly holds 2,826,378 common units, WE directly holds 2,952,233 common units, Discovery Pipeline directly holds 1,425,466 common units, and WGP directly holds 115,689,700 common units. The number of common units directly held by each of the entities described in the preceding sentence was not affected by the Transaction.
(4) Williams indirectly beneficially owns (a) the common units that each of WGPG, Holdings, WE, Discovery Pipeline, and WGP directly benefically own and (b) the incentive distribution rights in the Partnership, the 2% general partner interest in the Partnership, and the common units held by the General Partner. WGP indirectly benefically owns the common units directly benefically owned by WGPG.
(5) The reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interests therein, and this report shall not be deemed an admission that the reporting person is a beneficial owner of the reported securities for purposes of Section 16 or for any other purpose.

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