| KKKha Kenny Products INC. | Fountain Valley | CA | — | ◇ UNVERIFIED |
| KLKinematics, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
 Kinney Manufacturing CO | Van Nuys | CA | — | ◇ UNVERIFIED |
| KPKksp Precision Machining | Pleasant Prairie | WI | — | ◇ UNVERIFIED |
| KAK&l Auto Worx INC Dba Auto Revival | Rancho Cordova | CA | — | ◇ UNVERIFIED |
 Klein Marine Systems | Newburyport | MA | — | ◇ UNVERIFIED |
| KBKoyo Bearings North America LLC | Orangeburg | SC | — | ◇ UNVERIFIED |
| KIKP Industrial, Inc. | Newark | NY | — | ◇ UNVERIFIED |
| KMKsb Mechanical, INC. | Lancaster | CA | — | ◇ UNVERIFIED |
| LCL-3 Communications | Fort Drum | NY | — | ◇ UNVERIFIED |
| LCL3 Communications, Interstate Electronic | Anaheim | CA | — | ◇ UNVERIFIED |
| LCL3 Communications Wescam | Healdsburg | CA | — | ◇ UNVERIFIED |
 L3harris Cincinnati Electronics Dba Sonoma Eo | Santa Rosa | CA | — | ◇ UNVERIFIED |
| LIL3harris - Interstate Electronics Corporation | Yorba Linda | CA | — | ◇ UNVERIFIED |
| LL3harris-oceanserver | Imperial Beach | CA | — | ◇ UNVERIFIED |
| LOL3harris Oceanserver INC | Fall River | MA | — | ◇ UNVERIFIED |
| LRL3harris Randtron Antenna Systems | Menlo Park | CA | — | ◇ UNVERIFIED |
| LRL3harris - Randtron Antenna Systems - Small Antenna Suite 1 | San Leandro | CA | — | ◇ UNVERIFIED |
| LTL3harris Technologies INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| LTL3 Technologies | Fort Belvoir | VA | — | ◇ UNVERIFIED |
| LSLafox Screw Products, INC. | South Elgin | IL | — | ◇ UNVERIFIED |
| LGLamons Gasket Company | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| LALang Automotive | Lake Forest | CA | — | ◇ UNVERIFIED |
| LTL.a. Turbine | Valencia | CA | — | ◇ UNVERIFIED |
| LPLd Precision Machining INC | Cedar City | UT | — | ◇ UNVERIFIED |
| LILeidos INC | Vista | CA | — | ◇ UNVERIFIED |
| LMLighthouse Microwave | Wenona | IL | — | ◇ UNVERIFIED |
| LTLindsay Transportation Solutions | Rio Vista | CA | — | ◇ UNVERIFIED |
| LGLinn Gear Company | Lebanon | OR | — | ◇ UNVERIFIED |
| LALitton Advanced Systems INC | San Jose | CA | — | ◇ UNVERIFIED |
| LALitton Advanced Systems INC | San Jose | 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 |
| LML & M Manufacturing Company, INC. | New Hartford | CT | — | ◇ UNVERIFIED |
| LMLockheed Martin | Hill Air Force Base | UT | — | ◇ UNVERIFIED |
| LMLockheed Martin | Colorado Springs | CO | — | ◇ 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 | Syracuse | NY | — | ◇ UNVERIFIED |
| LMLockheed Martin Corporation | Colorado Springs | CO | — | ◇ UNVERIFIED |
| LMLockheed Martin Laser and Sensor Systems Bothell | Bothell | WA | — | ◇ UNVERIFIED |
| LMLockheed Martin Rms at Norfolk Naval Station | Norfolk | VA | — | ◇ UNVERIFIED |
| LMLockheed Martin - Sb Focalplane | Goleta | CA | — | ◇ UNVERIFIED |
| LMLockheed Martin Tact/archbald | Archbald | PA | — | ◇ UNVERIFIED |
| LTLocknut Technology INC. | Addison | IL | — | ◇ UNVERIFIED |
| LCLogicraft Corporation | Buffalo Grove | IL | — | ◇ UNVERIFIED |
