UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 8, 2010

MARVELL TECHNOLOGY GROUP LTD.

(Exact name of registrant as specified in its charter)

Canon’s Court

22 Victoria Street

Hamilton HM 12

Bermuda

(Address of principal executive offices)

(441) 296-6395

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Approval of Executive Performance Incentive Plan

At the 2010 Annual General Meeting of Shareholders of Marvell Technology Group Ltd. (“Marvell”) held on July 8, 2010 (the “Annual Meeting”), the shareholders approved the Marvell Executive Performance Incentive Plan (the “Incentive Plan”). Under the Incentive Plan, annual incentive awards made to certain senior executives of Marvell will qualify for a tax deduction as “performance-based compensation” pursuant to Section 162(m) of the Internal Revenue Code of 1986, as amended (“Section 162(m)”), assuming compliance with the terms of the Incentive Plan. The Incentive Plan became effective on April 29, 2010, subject to shareholder approval at the Annual Meeting, and will be in effect until the 2015 annual general meeting of shareholders. Eligible participants in the Incentive Plan will be selected by the Executive Compensation Committee (the “Compensation Committee”) of Marvell’s Board of Directors (the “Board”); however, Marvell anticipates that all of its named executive officers will participate in the Incentive Plan. The Compensation Committee has exclusive authority to administer the Incentive Plan.

The Compensation Committee adopted the Incentive Plan on April 29, 2010, subject to shareholder approval at the Annual Meeting. A copy of the Incentive Plan is attached to this report as Exhibit 10.1. The description of the Incentive Plan contained herein is qualified in its entirety by reference to the full text of the Incentive Plan. In addition, a more detailed description of the material features of the Incentive Plan is contained in Proposal No. 4 of the Proxy Statement prepared by Marvell in preparation for the Annual Meeting and filed with the U.S. Securities and Exchange Commission on May 27, 2010 (the “Proxy Statement”) and is incorporated herein by reference.

Approval of an Amendment to Marvell’s Amended and Restated 1995 Stock Option Plan

At the Annual Meeting, the shareholders also approved an amendment to Marvell’s Amended and Restated 1995 Stock Option Plan (the “1995 Plan”) that (i) allows Marvell to grant awards other than stock options and stock appreciation rights intended to qualify as “performance-based compensation” within the meaning of Section 162(m) pursuant to an appendix to the 1995 Plan; and (ii) amends the 1995 Plan to reduce the maximum number of shares automatically added to the 1995 Plan each fiscal year by 50% (the “reduced evergreen”). Under the reduced evergreen provision, on the first day of each fiscal year starting January 31, 2011 and continuing until the earlier of January 31, 2013 or the termination of the 1995 Plan, the share reserve of the 1995 Plan automatically increases by the lesser of: (a) 20,000,000 shares, (b) 2.5% of outstanding shares on such date, or (c) a lesser amount determined by the Board.

The Board through the Compensation Committee adopted the amendment to the 1995 Plan (the “2010 Amendment”) on April 29, 2010, subject to shareholder approval at the Annual Meeting. A copy of the 2010 Amendment is attached to this report as Exhibit 10.2. The description of the 2010 Amendment contained herein is qualified in its entirety by reference to the full text of the 2010 Amendment. In addition, a more detailed description of the 2010 Amendment is contained in Proposal No. 5 of the Proxy Statement and is incorporated herein by reference.

At the Annual Meeting, the shareholders approved, effective as of July 8, 2010, the Third Amended and Restated Bye-Laws (the “Amended Bye-Laws”). The following changes were made to the Second Amended and Restated Bye-Laws (the “Existing Bye-Laws”):

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A copy of the Amended Bye-Laws is attached to this report as Exhibit 3.1. The description of the Amended Bye-Laws contained herein is qualified in its entirety by reference to the full text of the Amended Bye-Laws.

At the Annual Meeting held on July 8, 2010, shareholders voted on the matters as set forth below. Each issued common share was entitled to one vote on the proposals voted on at the meeting.

The term of office for directors Dr. Sehat Sutardja, Dr. Pantas Sutardja, Kuo Wei (Herbert) Chang, Dr. Juergen Gromer and Arturo Krueger continued after the annual general meeting of shareholders.

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SIGNATURE

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

Dated: July 13, 2010

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