ArcelorMittal — Regulatory Filings 2012

Apr 25, 2012

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April 25, 2012

VIA EDGAR AND HAND DELIVERY Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-4631 Attention: Rufus Decker

Re: ArcelorMittal

Form 20-F for the Year ended December 31, 2011

Filed February 22, 2012

Form 20-F/A for the Year ended December 31, 2011

Filed March 6, 2012

File No. 333-146371

Dear Mr. Decker:

ArcelorMittal (“ ArcelorMittal ”) sent a response letter dated April 25, 2012 to a staff comment letter dated April 11, 2012 relating to the above-referenced Form 20-F and Form 20-F/A.

Further to such response letter, ArcelorMittal acknowledges that:

(i) it is responsible for the adequacy and accuracy of the disclosure in its filings;

(ii) staff comments or changes to the disclosure in response to staff comments do not foreclose the Commission from taking any action with respect to the filing; and

(iii) ArcelorMittal may not assert staff comments as a defense in any proceeding initiated by the Commission or any person under the federal securities laws of the United States.

Please advise us if we can provide any further information or assistance to facilitate your review. Please direct any further comments or questions to John D. Brinitzer (+33-1-4074-6924) or to Monica Kays (+33-1-4074-6983) at our counsel Cleary Gottlieb Steen & Hamilton LLP.

Sincerely,

/s/ Henk Scheffer

Henk Scheffer Company Secretary

/s/ Genuino Christino

Genuino Christino

Vice President, Group Accounting

Performance Management

cc: John D. Brinitzer, Esq.

Monica Kays, Esq.

(Cleary Gottlieb Steen & Hamilton LLP)