- Adaptive Optics Associates, Inc.
- Alliant Techsystems Operations LLC
- ATK Space Systems LLC
- Cutting Edge Optronics, Inc.
- NGC International, Inc.
- Northrop Grumman Electronic Systems International, Inc.
- Northrop Grumman Global Services, Inc.
- Northrop Grumman Information Technology Global Corp.
- Northrop Grumman Innovation Systems LLC
- Northrop Grumman International Asia Services, Inc.
- Northrop Grumman International Middle East Services, Inc.
- Northrop Grumman International Services Company, Inc.
- Northrop Grumman International Trading, Inc.
- Northrop Grumman ISS International, Inc
- Northrop Grumman Overseas Holdings, Inc.
- Northrop Grumman Overseas Service Corporation
- Northrop Grumman Overseas Services, Inc.
- Northrop Grumman Systems Corporation
- Northrop Grumman Worldwide Enterprise Corp.
- Orbital International LLC
- Orbital Sciences LLC.
- Scaled Composites, LLC
- Sonoma Photonics, Inc.
- Space Logistics LLC