Exhibit

We consent to the incorporation by reference in Registration Statement Nos. 033-59815, 033-59853, 333-67266, 333-100179, 333-107734, 333-121104, 333-125120, 333-127317, and 333-175798 on Form S-8; and Registration Statement No. 333-217087 on Form S-3; of our reports dated January 29, 2018, relating to the financial statements of Northrop Grumman Corporation and subsidiaries and the effectiveness of Northrop Grumman Corporation and subsidiaries' internal control over financial reporting, appearing in this Annual Report on Form 10-K of Northrop Grumman Corporation for the year ended December 31, 2017.