UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

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Rule 13d-1(b)

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Rule 13d-1(c)

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Rule 13d-1(d)

CUSIP No. G 5876H105

1.

Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only)
Ms. Weili Dai; and
Dr. Sehat Sutardja

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

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(b)

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3.

SEC Use Only

4.

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
-0- shares

6.

Shared Voting Power 
36,639,931 shares*

7.

Sole Dispositive Power 
-0- shares

8.

Shared Dispositive Power
36,639,931 shares *

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
36,639,931 shares

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
12.6%

12.

Type of Reporting Person (See Instructions)
IN

Item 1.

(a)

Name of Issuer
Marvell Technology Group Ltd.

(b)

Address of Issuer’s Principal Executive Offices
Marvell Technology Group Ltd.

Canon’s Court

22 Victoria Street

Hamilton HM 12

Bermuda

Item 2.

(a)

Name of Person Filing
Ms. Weili Dai; and
Dr. Sehat Sutardja

(b)

Address of Principal Business Office or, if none, Residence
Marvell Semiconductor, Inc.

5488 Marvell Lane

Santa Clara, CA 95054

(c)

Citizenship
United States

(d)

Title of Class of Securities
Common stock, par value $0.002 per share

(e)

CUSIP Number
G 5876H105

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

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Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

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Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

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Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

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Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

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An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

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An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

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A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

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A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

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A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

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Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Not applicable.

Item 4.

Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:   

36,639,931 shares.*

(b)

Percent of class:   

12.6%.

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote   

-0- shares.

(ii)

Shared power to vote or to direct the vote    

36,639,931 shares. *

(iii)

Sole power to dispose or to direct the disposition of   

-0- shares.

(iv)

Shared power to dispose or to direct the disposition of   

36,639,931 shares. *

*Each Reporting Person shares dispositive and voting control over the following shares:

1.

26,126,158 shares jointly owned by Ms. Weili Dai & Dr. Sehat Sutardja as a Reporting Group;

2.

10,226,667 shares owned by The Sutardja Family Partners, a California family limited partnership (these shares are indirectly owned by Reporting Group); and

3.

287,106 derivative securities jointly owned by Reporting Group and exercisable on or at March 1, 2006.

(Share balances are from SEC Form 4 filed on December 12, 2005.)

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   o.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person

Not applicable.

Item 8.

Identification and Classification of Members of the Group

Not applicable.

Item 9.

Notice of Dissolution of Group

Not applicable.

Item 10.

Certification

Not applicable.

Dated: February 14, 2006.

By

 /s/ Weili Dai

Ms. Weili Dai

 By

  /s/ Sehat Sutardja

Dr. Sehat Sutardja

Exhibit

Description

99.1

Agreement of Joint Filing dated as of February 14, 2006.