Exhibit 23.3
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of Orbital ATK, Inc. of our report dated May 28, 2015 relating to the financial statements of Orbital Sciences Corporation, which appears in Orbital ATK, Inc.’s Current Report on Form 8-K dated June 2, 2015.
/s/ PricewaterhouseCoopers LLP
McLean, Virginia
June 24, 2015