SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

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FORM 6-K

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

Dated April 15, 2005

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Commission File Number: 001-14666

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MITTAL STEEL COMPANY N.V.

(Translation of registrant’s name into English)

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15th Floor, Hofplein 20
3032 AC Rotterdam
The Netherlands
(Address of registrant’s principal executive offices)

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     Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F þ Form 40-F o

     Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):      

     Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):      

     Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o No þ

If “Yes, is marked, indicate below the file number assigned to the registrant in connection with Rule
12g3-2(b): 82-     .

 

INDEX

Exhibit 1.1	Press Release, dated April 15, 2005, in which Mittal Steel Company N.V. announces management organization at Mittal Steel USA.

 

SIGNATURES

     Pursuant to the requirements of 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.

	MITTAL STEEL COMPANY N.V.
Date: April 15, 2005	By:	/s/ Henk Scheffer
		Name:	Henk Scheffer
		Title:	Company Secretary

 

EXHIBIT INDEX

1.1	Press Release, dated April 15, 2005, in which Mittal Steel Company N.V. announces organization at Mittal Steel USA.