| CMCypris Materials INC | Alameda | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| CECytec Engineered Materials in | Saugus | CA | Textile Mills313320 | — | ◇ UNVERIFIED |
| CECytec Engineered Materials INC | Orange | CA | Textile Mills313320 | — | ◇ UNVERIFIED |
| DFDairy Farmers of America | Hughson | CA | Food Manufacturing311512 | — | ◇ UNVERIFIED |
| DFDairy Farmers of America | Corona | CA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| DPDakota Press | San Leandro | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| DCDalou CORP Dba Tomco Products | Azusa | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| DPDana Point Shipyard | Dana Point | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| DCDandy Cooling Company, LLC - Pacific Avenue | Oxnard | CA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| DDanfield | Commerce | CA | Leather and Allied Product Manufacturing316110 | — | ◇ UNVERIFIED |
| DIDarling Ingredients INC | Fresno | CA | Food Manufacturing311613 | — | ◇ UNVERIFIED |
| DDDavid Downs Company | Cudahy | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| DIDavila International Circuits | Mountain View | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| DWDavis Wire Coporation | Hayward | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| DLDay Lee Foods | Santa Fe Springs | CA | Food Manufacturing311612 | — | ◇ UNVERIFIED |
 Dayton Superior CORP | Modesto | CA | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| Dayton Superior Specialty Chem Ical CORP Edoco | Long Beach | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| DPDba Par Pharmaceutical | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| D8De 8484 Wilshire, LLC | Beverly Hills | CA | Transportation Equipment Manufacturing336340 | — | ◇ UNVERIFIED |
| DGDelco - Goleta | Goleta | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| DCDeleo Clay Tile CO INC | Lake Elsinore | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DBDelgado Brothers CO | Los Angeles | CA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| DMDel Mar Plastic INC | Oxnard | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| DTDelstar Technologies | El Cajon | CA | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| DBDelta Boat Works | Isleton | CA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| DDDelta Dvh Circuits | Van Nuys | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| DPDelta Pacific Products | Union City | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| DTDelta Tau Data Systems INC | Chatsworth | CA | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| DWDel West Engineering | Valencia | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| DIDenmac Ind INC | Paramount | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| DPDenso Products & Services Americas, INC. | Long Beach | CA | Transportation Equipment Manufacturing336340 | — | ◇ UNVERIFIED |
| DCDesert Cottonseed Products INC | Coachella | CA | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| DMDesigner Metal Works and Lighting, INC. | Ontario | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| DUDesotec US LLC | Red Bluff | CA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| DCDeutsch CO Electronic Compone | Banning | CA | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| DPDevine Printing | Newbury Park | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| DIDexol Ind INC | Torrance | CA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| DFDiagnostics for the Real World | Sunnyvale | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| DXDiagnostic X-ray INC | San Jose | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| DCDionex CORP B5 | Sunnyvale | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| DCDionex Corporation | Sunnyvale | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| DGDisc Graphics INC | Burbank | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| DDDispensing Dynamics International | City of Industry | CA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| DADistinctive Appliances INC Aka Dacor | City of Industry | CA | Electrical Equipment, Appliance & Component Manufacturing335221 | — | ◇ UNVERIFIED |
| DCDitty Container INC | South El Monte | CA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| DDDitty Drum | Orange | CA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| DCDiversey CORP. | Santa Fe Springs | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| DADiversified Asphalt Products, INC | Anaheim | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| DADnh Aero Finishing INC | Palmdale | CA | Chemical Manufacturing325510 | 1-19 | ◇ UNVERIFIED |
| DPDome Printing & Lithograph | Sacramento | CA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
