| LALitton Advanced Systems INC | San Jose | CA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| LLkq | San Jose | CA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| LMLoc Mfg INC | San Jose | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| LILogosol INC | San Jose | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| LMLoral Microwave Narda West | San Jose | CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| LSLord & Sons INC | San Jose | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| LHLorenzo Heating & Cooling | San Jose | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| LDLou's Doors, INC. | San Jose | CA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| LSLsg Sky Chefs | San Jose | CA | Transportation Equipment Manufacturing336999 | — | ▲ REPORTED CLOSED |
| LCLtx CORP | San Jose | CA | Computer and Electronic Product Manufacturing334514 | — | ◇ UNVERIFIED |
 Lumentum Operations LLC | San Jose | CA | Computer and Electronic Product Manufacturing334290 | — | ◇ UNVERIFIED |
| Lumentum Operations, LLC | San Jose | CA | Computer and Electronic Product Manufacturing334290 | — | ◇ UNVERIFIED |
| LLLumileds LLC | San Jose | CA | Computer and Electronic Product Manufacturing334514 | — | ▲ REPORTED CLOSED |
| LILuminostics INC | San Jose | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| MCMac Cal CO INC | San Jose | CA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| MAMachine Applications Technology INC | San Jose | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MTM/a-com Tech INC | San Jose | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| MPMagnum Pacific INC | San Jose | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MHMai Huong Nguyen, D.d.s., A.p.c | San Jose | CA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| MDMalcolm Drilling Company INC | San Jose | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| MSMancia's Steel Company | San Jose | CA | Leather and Allied Product Manufacturing316110 | — | ◇ UNVERIFIED |
| MMMannington Mills, INC. | San Jose | CA | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| MManufab | San Jose | CA | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| MPMariani Packing CO | San Jose | CA | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| MIMarketshare INC | San Jose | CA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MLMarrs Land 2 LLC | San Jose | CA | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| MPMass Precision, INC | San Jose | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MPMass Precision Sheetmetal | San Jose | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| MSMaxar Space LLC (bldg 60) | San Jose | CA | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| MIMaxim Integrated Product INC | San Jose | CA | Computer and Electronic Product Manufacturing334413 | — | ▲ REPORTED CLOSED |
| MPM&d Painting CO | San Jose | CA | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
 Merit Medical Systems, INC | San Jose | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MSMerlin Solar Technologies | San Jose | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| MSMerlin Solar Technologies, INC | San Jose | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| MEMetro Elevator Northern California, INC. | San Jose | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| MEMetro Elevator / Sj City College | San Jose | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| MSMetro Steel Fab INC | San Jose | CA | Fabricated Metal Product Manufacturing332114 | — | ◇ UNVERIFIED |
| MDMichael Dickinson an Individual | San Jose | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| MSMicrel Semiconductor | San Jose | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| MCMicro Chassis, Division of Serra Corporation | San Jose | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MTMicrochip Technology | San Jose | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| MSMicroclean / Savage | San Jose | CA | Printing and Related Support Activities323122 | — | ◇ UNVERIFIED |
 Micross Hi Rel Power Solutions, INC. | San Jose | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| MEMicrus Endovascular, LLC | San Jose | CA | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| MTMike Tran and Yen Kim Ta, as Trustees of the Tran Family Trust | San Jose | CA | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| MMMillcraft Mfg INC | San Jose | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MMMilltech Machining INC | San Jose | CA | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| MBMiltenyi Biotec | San Jose | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MIMiradry INC | San Jose | CA | Computer and Electronic Product Manufacturing334517 | — | ◇ UNVERIFIED |
| MCMission City Millwork, CO | San Jose | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
