| LFLight Field Lab | San Jose | CA | — | ◇ UNVERIFIED |
| LELighting Enterprises INC Plant 6 | Fraser | MI | — | ◇ UNVERIFIED |
 Lippert Components Incorporated Plant 50 | Goshen | IN | — | ◇ UNVERIFIED |
| LCLippert/swu Curt Group | Perry | FL | — | ◇ UNVERIFIED |
| LBLisa Building LLC | Auburn | WA | — | ◇ UNVERIFIED |
| LDLittle Dog Diesel LLC | Hanover | PA | — | ◇ UNVERIFIED |
| LRLkq Remanufacturing Division | Springfield | MO | — | ◇ UNVERIFIED |
| LLL & L Products Inc-deep South | Romeo | MI | — | ◇ UNVERIFIED |
| LALmi Aerospace Cottonwood Falls, Ks | Cottonwood Falls | KS | — | ◇ UNVERIFIED |
| LALmi Aerospace INC | Auburn | WA | — | ◇ UNVERIFIED |
| LALmi Aerospace, INC (stormwater) | Wichita | KS | — | ◇ UNVERIFIED |
| LML - M Radiator INC - Bonnie Building | Hibbing | MN | — | ◇ UNVERIFIED |
| LML - M Radiator INC - R - D - Annex Building | Hibbing | MN | — | ◇ UNVERIFIED |
| LML - M Radiator INC - Weld Shop | Hibbing | MN | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeronautics CO. | Clarksburg | WV | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeroparts INC | Johnstown | PA | — | ◇ UNVERIFIED |
| LMLockheed Martin Skunk Works | Helendale | CA | — | ◇ UNVERIFIED |
| LSLord & Sons INC | San Jose | CA | — | ◇ UNVERIFIED |
| LNLorient North America Limited | Lexington | KY | — | ◇ UNVERIFIED |
| LOLos Osos Wastewater Plant - Mid Town Pump Station | Los Osos | CA | — | ◇ UNVERIFIED |
| LCLotte Chemical Alabama CORP | Auburn | AL | — | ◇ UNVERIFIED |
| LCLrc Coil Company | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| LCL&S Compressor Works LLC | Port Huron | MI | — | ◇ UNVERIFIED |
| LSLuminescent Sys INC | Lebanon | NH | — | ◇ UNVERIFIED |
| LEL&w Engineering Plt4 | Blissfield | MI | — | ◇ UNVERIFIED |
| LWL & W Precision Machining LLC | Fremont | CA | — | ◇ UNVERIFIED |
| MMM3 Mfg LLC | Ramona | CA | — | ◇ UNVERIFIED |
| MPM3 Precision LLC Dba K&g Engineering | Santa Maria | CA | — | ◇ UNVERIFIED |
| MDM9 Dev LLC | Santa Clara | CA | — | ◇ UNVERIFIED |
| MSMachine Shop Express | San Diego | CA | — | ◇ UNVERIFIED |
| MAMadera and Beau LLC | Cardiff By the Sea | CA | — | ◇ UNVERIFIED |
| MTMad Tech Diesel Workz LLC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| MAMagna Assembly Piedmont | Piedmont | SC | — | ◇ UNVERIFIED |
| MEMagna Engineered Glass | Holland | MI | — | ◇ UNVERIFIED |
| MIMagna International INC | Lansing | MI | — | ◇ UNVERIFIED |
| MJMagna James LTD Dba Northstar Engineering | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| MMagna-lakeland | Kentwood | MI | — | ◇ UNVERIFIED |
| MMMagna Mirrors Corporation | Grand Haven | MI | — | ◇ UNVERIFIED |
| MPMagna Powertrain Shelby Township | Utica | MI | — | ◇ UNVERIFIED |
| MAMagnolia Automotive Services-alabama LLC | Madison | AL | — | ◇ UNVERIFIED |
| MBMahle Behr Charleston INC. | North Charleston | SC | — | ◇ UNVERIFIED |
| MBMahle Behr USA INC | Troy | MI | — | ◇ UNVERIFIED |
| MIMahle INC Trumbull Plant | Trumbull | CT | — | ◇ UNVERIFIED |
 Mahle Industrial Thermal Systems America | Grand Rapids | MI | — | ◇ UNVERIFIED |
| MAMajor Armature Co-recycling Div | Chicago | IL | — | ◇ UNVERIFIED |
| MGMakers Garage LLC | Madison Heights | MI | — | ◇ UNVERIFIED |
| MAMalibu Aerospace | Blaine | MN | — | ◇ UNVERIFIED |
| MTMall Tooling & Engineering, INC. | Mount Clemens | MI | — | ◇ UNVERIFIED |
| MMM&e Machine and Engineering CO | Murrieta | CA | — | ◇ UNVERIFIED |
| MEMan Energy Solutions USA INC | Pompano Beach | FL | — | ◇ UNVERIFIED |
