| TUTerex Utilities INC | Fontana | CA | Transportation Equipment Manufacturing336120 | — | ◐ LIKELY ACTIVE |
| TOTop of the Line Breeds, LLC | Fontana | CA | Miscellaneous Manufacturing339999 | — | ◐ LIKELY ACTIVE |
| UFUS Foods, Inc. | Fontana | CA | — | — | ◐ LIKELY ACTIVE |
| VWVeolia WTS Services USA, Inc. - Fontana Service Center | Fontana | CA | Machinery Manufacturing333318 | 20-99 | ◐ LIKELY ACTIVE |
| AWAllied West Paper CORP | Fontana | CA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| ADAmerican Die Casting | Fontana | CA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| CFCustom Fabricated Metals, LLC | Fontana | CA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| HTHarbor Truck Bodies | Fontana | CA | Transportation Equipment Manufacturing336110 | — | ◇ UNVERIFIED |
| NWNew Wave Converting INC | Fontana | CA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| NWNew Wave Converting INC | Fontana | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| VFVanguard Fabrications Corporation | Fontana | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| AAA & a Hydraulic Machine Shop | Fontana | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| ACA C Angeles Pallets INC | Fontana | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| ASAdvanced Sterilization Products INC | Fontana | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AAggreko | Fontana | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| AOAkal One Stop Services | Fontana | CA | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| AMAlejandro Mora an Ind. Dba Hardwood Pallets | Fontana | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| ASAlfred Signs | Fontana | CA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| AFAmerican Fleet Service Solutions | Fontana | CA | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| ASAmerican Security Products INC | Fontana | CA | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| APAms Paving LLC | Fontana | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ACAndersen Construction | Fontana | CA | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| 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 |
