| FPFalcon Products INC | Azusa | CA | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| FPFalcon Products INC | City of Industry | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| FRFarmers Rice Co-op | Dos Palos | CA | Food Manufacturing311212 | — | ◇ UNVERIFIED |
| FGFarrar Grinding Company | Inglewood | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| FRFarrow Ready Mix | Santa Rosa | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FCFastenal Company | Modesto | CA | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| FFFast Fabricator INC Dba Water Works Mfg | Olivehurst | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| FSFederal Sign Division | Oceanside | CA | Beverage and Tobacco Product Manufacturing312230 | — | ◇ UNVERIFIED |
| FQFelton Quarry | Felton | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| FIFencescreen INC | Rancho Santa Margari | CA | Fabricated Metal Product Manufacturing332618 | 20-99 | ◇ UNVERIFIED |
| FTFiber Tech Engineering INC | Escondido | CA | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| FAFilo America | Commerce | CA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| FCFilter Concepts INC | Santa Ana | CA | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| FCFiltrol Corporation | Los Angeles | CA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| FSFiltronic Solid State | Santa Clara | CA | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| FLFine Line Paint CORP | Santa Fe Springs | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| FPFine Pitch | Fremont | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| FPFine Pitch Tech | Fremont | CA | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| FBFirestone Business Park | Salinas | CA | Plastics and Rubber Products Manufacturing326211 | — | ◇ UNVERIFIED |
| FSFive Star Grinding | Covina | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| FCFlavorchem Corporation | San Clemente | CA | Food Manufacturing311930 | — | ◇ UNVERIFIED |
| FWFleetwood Windows and Doors LLC | Corona | CA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| FYFleischmann's Yeast | Oakland | CA | Food Manufacturing311220 | — | ◇ UNVERIFIED |
| FOFletcher Oil & Refining CO (forco) Carson Refinery | Carson | CA | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| FDFleur De Lait West LLC | Industry | CA | Food Manufacturing311513 | — | ◇ UNVERIFIED |
 Flexible Metal Hose Mfg CO | Costa Mesa | CA | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| FPFlex Products INC | Santa Rosa | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| FGFlint Group North America CORP | La Puente | CA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| FNFlorence & New Italian Art Company | Hayward | CA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| FIFlowmaster, INC. | West Sacramento | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| FCFmc Corporation | Newark | CA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| FCFmc Corporation | Fresno | CA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| FCFmc CORP Sweeper Div | Pomona | CA | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| FFFoam Fabricators | Compton | CA | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| FLFolsom Lake Marina | Camino | CA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| FMFord Motor CO | Newport Beach | CA | Fabricated Metal Product Manufacturing332995 | — | ◇ UNVERIFIED |
| FCForemost Coating CO. INC. | Gardena | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| FMFormer Menasco Aerospace Facility | Burbank | CA | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| FIFormfactor Incorporated | Livermore | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| FCFormica Corporation | Rocklin | CA | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| FFFortune Fashions Ind | Vernon | CA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| FPFoss Plating CO INC | Santa Fe Springs | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| FCFoster Commodities | Kingsburg | CA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| FFFoster Farms Ceres Feedmill | Ceres | CA | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| FTFoster Turkey Products Plant 1 | Turlock | CA | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| FIFotokem Industries, INC | Burbank | CA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| FDFour D Metal Finishing Incorporated | Sunnyvale | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| FSFour Star Chem INC | Los Angeles | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| FIFoxboro- Ict INC | San Jose | CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| FLFoxfury LLC | Oceanside | CA | Electrical Equipment, Appliance & Component Manufacturing335129 | — | ◇ UNVERIFIED |
