NORTHROP GRUMMAN CORPORATION

EXHIBIT 21

NORTHROP GRUMMAN CORPORATION SUBSIDIARIES

Address for all subsidiaries is:

c/o NORTHROP GRUMMAN CORPORATION

Office of the Secretary

1840 Century Park East

Los Angeles, California 90067

Name of Subsidiary |  | Jurisdiction of Incorporation |  | Ownership Percentage |
Northrop Grumman Systems Corporation |  |  |  |  |
(formerly Northrop Grumman Corporation) |  | Delaware |  | 100 | %
Newport News Shipbuilding Inc. |  | Delaware |  | 100 | %
Northrop Grumman Space & Mission Systems Corp. |  |  |  |  |
(formerly TRW Inc.) |  | Ohio |  | 100 | %

The company has additional operating subsidiaries, which considered in the aggregate or as a single subsidiary, do not constitute a significant subsidiary.

All above listed subsidiaries have been consolidated in the company’s consolidated financial statements.