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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

 Washington, DC 20549

Form 10-K/A

(AMENDMENT NO. 1)

Commission file number 1-34258

WEATHERFORD INTERNATIONAL LTD.

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: 41.22.816.1500

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes o No þ

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No þ

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 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. Yes þ No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. o

Indicate by check mark whether the registrant is a large accelerated filer, an 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.

(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

Yes o No þ

The aggregate market value of the voting stock held by nonaffiliates of the registrant as of June 30, 2012 was approximately $8 billion based upon the closing price on the New York Stock Exchange as of such date.

As of February 26, 2013, there were 765,111,597 shares of Weatherford registered shares, 1.16 Swiss francs par value per share, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

 Certain information required to be furnished pursuant to Part III of this Annual Report on Form 10-K/A is incorporated by reference from the registrant's definitive proxy statement for the annual shareholder meeting held on June 20, 2013.

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This Amendment No. 1 on Form 10-K/A (this "Amendment") is being filed solely for the purpose of correcting a typographical error on the chief executive officer's certification letter filed as Exhibit 32.1 to the Company's Annual Report on Form 10-K filed on March 4, 2013 (the "Original Annual Report").  The chief executive officer's certification was incorrectly dated as March 4, 2012 instead of March 4, 2013.  Except for this correction, there have been no changes to the Original Annual Report.   This Amendment does not reflect events or developments after the date of filing of the Original Annual Report.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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