| ATAqua Tri | Fontana | CA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| AAArredondos Auto | Fontana | CA | Food Manufacturing311314 | — | ◇ UNVERIFIED |
| APAsc Profiles INC Dba Aep Span | Fontana | CA | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| APAsr Powder Coating LLC. | Fontana | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ADAutomotive Design INC. | Fontana | CA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| AFA -z Fontana Alternator, Starter & Repair | Fontana | CA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
 Aztec Technology CORP | Fontana | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| BSBab Steering Hydraulics INC | Fontana | CA | Transportation Equipment Manufacturing336330 | — | ◇ UNVERIFIED |
| BAB & a Fuel Center, INC. | Fontana | CA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| BDBally Development, LLC | Fontana | CA | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
| BTB&a Tire Shop | Fontana | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| BTBetts Truck Parts and Service | Fontana | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BTBetts Truck Parts and Service | Fontana | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BIBio-lab INC | Fontana | CA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| BDBlue Diamond Materials Fontan | Fontana | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BMBrian Mcclanahan | Fontana | CA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| BABridgestone Americas Tire Operations LLC | Fontana | CA | Plastics and Rubber Products Manufacturing326212 | — | ◇ UNVERIFIED |
 Brooks Industrial Marketplace | Fontana | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BPBrooks Products | Fontana | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| BSB & S Pallets | Fontana | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| CMCalifornia Moulding CO | Fontana | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-0k1214 | Fontana | CA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| CWCal West Manufacturing | Fontana | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| CECalzona Enterprises | Fontana | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| CMCamco Machine INC | Fontana | CA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| CWCameron West Coast | Fontana | CA | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
| CSCapitol Steel Fabricatiors INC | Fontana | CA | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| CECarson Etiwanda LLC | Fontana | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChatfield-clark CO INC | Fontana | CA | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| CIChemicals, INC. | Fontana | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CAChocolates and Health | Fontana | CA | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| COCity of Fontana | Fontana | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CPClark Pacific | Fontana | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CPClark Pacific Dba Pacific Embedded Products | Fontana | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CCliffstar | Fontana | CA | Food Manufacturing311421 | — | ◇ UNVERIFIED |
| CConexwest | Fontana | CA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| CPContinental Pallets | Fontana | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| CLContractors-services LLC | Fontana | CA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| CPCortez Pallet Service | Fontana | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| CSCreative Stone Mfg,. INC. | Fontana | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CSCreative Stone Mfg, INC Dba Coronado Stone Products | Fontana | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| DJDaryl J. Buck | Fontana | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| DMDennie Manning Concrete, INC. | Fontana | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DLDhollandia LLC | Fontana | CA | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
| D1Drivetime-fontana 1c (drivetime Car Sale | Fontana | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| DCD.s.m.t. Company, INC. | Fontana | CA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| DADura Art Stone INC | Fontana | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| EAErgon Asphalt & Emulsions, INC - Fontana | Fontana | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ECEverett Charles Technologies | Fontana | CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| ECExpress Contractors INC | Fontana | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
