Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-173170 on Form S-8 of our report dated June 6, 2014, relating to the financial statements and supplemental schedule of the Huntington Ingalls Industries Savings Plan appearing in this Annual Report on Form 11-K for the year ended December 31, 2013.

/s/ DELOITTE & TOUCHE LLP

Richmond, Virginia

June 6, 2014