| L3L 3 Interstate Electronics Corporation | Anaheim | CA | — | ◇ UNVERIFIED |
| LTL3 Technologies | Fort Belvoir | VA | — | ◇ UNVERIFIED |
| LTL3 Technologies Link Simulation & Training | Binghamton | NY | — | ◇ UNVERIFIED |
| LALang Automotive | Lake Forest | CA | — | ◇ UNVERIFIED |
| LILeidos INC | Vista | CA | — | ◇ UNVERIFIED |
| LMLighthouse Microwave | Wenona | IL | — | ◇ UNVERIFIED |
| LALitton Advanced Systems INC | San Jose | CA | — | ◇ UNVERIFIED |
| LALitton Advanced Systems INC | San Jose | CA | — | ◇ UNVERIFIED |
| LGLitton Guidance and Control Sy | Northridge | CA | — | ◇ UNVERIFIED |
| LGLitton Guidance & Control Sys | Woodland Hills | CA | — | ◇ UNVERIFIED |
| LMLitton Marine Systems | Charlottesville | VA | — | ◇ UNVERIFIED |
| LSLitton Sys INC Guidance & Control Sys | Goleta | CA | — | ◇ UNVERIFIED |
| LMLockheed Martin | Colorado Springs | CO | — | ◇ UNVERIFIED |
| LMLockheed Martin | Hill Air Force Base | UT | — | ◇ UNVERIFIED |
| LMLockheed Martin | Pearl Harbor | HI | — | ◇ UNVERIFIED |
| LMLockheed Martin at East Coast Repair and Fabrication | Newport News | VA | — | ◇ UNVERIFIED |
| LMLockheed Martin at Nassco Norfolk | Norfolk | VA | — | ◇ UNVERIFIED |
| LMLockheed Martin at Nbsd | San Diego | CA | — | ◇ UNVERIFIED |
| LMLockheed Martin Corporation | Kings Bay | GA | — | ◇ UNVERIFIED |
| LMLockheed Martin Corporation | Colorado Springs | CO | — | ◇ UNVERIFIED |
| LMLockheed Martin Corporation | Syracuse | NY | — | ◇ UNVERIFIED |
| LMLockheed Martin Laser and Sensor Systems Bothell | Bothell | WA | — | ◇ UNVERIFIED |
| LMLockheed Martin Mission Systems and Training | Riviera Beach | FL | — | ◇ UNVERIFIED |
| LMLockheed Martin Rms at Norfolk Naval Station | Norfolk | VA | — | ◇ UNVERIFIED |
| LMLockheed Martin - Sb Focalplane | Goleta | CA | — | ◇ UNVERIFIED |
| LMLockheed Martin, Sof Glss | Fort Walton Beach | FL | — | ◇ UNVERIFIED |
| LMLockheed Martin Tact/archbald | Archbald | PA | — | ◇ UNVERIFIED |
 Luminar Technologies, INC | Orlando | FL | — | ◇ UNVERIFIED |
| LTLuminar Technoloties, INC | Orlando | FL | — | ◇ UNVERIFIED |
| MSMarket Spectrum Inc. | Charlotte | NC | — | ◇ UNVERIFIED |
| MSMarket Spectrum Inc. | Charlotte | NC | — | ◇ UNVERIFIED |
| MMMartin Marietta Laboratories | Halethorpe | MD | — | ◇ UNVERIFIED |
| MVMax Viz INC | Tigard | OR | — | ◇ UNVERIFIED |
| MRMCA Real Estate Investments LLC | Palmdale | CA | — | ◇ UNVERIFIED |
| MDMcdonnell Douglas Helicopter CO | Culver City | CA | — | ◇ UNVERIFIED |
| MDMeggitt (san Diego), INC. | San Diego | CA | — | ◇ UNVERIFIED |
| MLMerlin Labs INC. | North Kingstown | RI | — | ◇ UNVERIFIED |
| MMMetal Marine Pilot INC | Fircrest | WA | — | ◇ UNVERIFIED |
| MAMndot Aeronautics Jay Vor-dme | Lansing Township | MN | — | ◇ UNVERIFIED |
| MIMoog Inc., Through Its Space and Defense Group | East Aurora | NY | — | ◇ UNVERIFIED |
| MSMotorfast Sport and Vintage Motorcycle Repair | San Mateo | CA | — | ◇ UNVERIFIED |
| NIN2 Imaging Systems LLC | Tustin | CA | — | ◇ UNVERIFIED |
| NDNavcom Defense Electronics, INC | Corona | CA | — | ◇ UNVERIFIED |
| NINavico, INC. | San Diego | CA | — | ◇ UNVERIFIED |
| NNNewport News Shipbuilding Light Manufacturing Advanced Technology (lmat) Campus | Hampton | VA | — | ◇ UNVERIFIED |
| NNightwing | Sterling | VA | — | ◇ UNVERIFIED |
| NPNorth Penn Area 5 (ou1) | Lansdale | PA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Mesa | AZ | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Goleta | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Topeka | KS | — | ◇ UNVERIFIED |
