| ESExact Sciences | Madison | WI | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| FMFederal Mogul - Power Train Systems | Schofield | WI | Transportation Equipment Manufacturing336310 | — | ◇ UNVERIFIED |
| FCFeynman Center | Madison | WI | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| FIFiberdome Inc-plant #1 | Lake Mills | WI | Plastics and Rubber Products Manufacturing326190 | — | ◇ UNVERIFIED |
| FHFisher Hamilton INC Main Plant | Two Rivers | WI | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| FNFitesa Nonwoven INC | Green Bay | WI | Textile Mills313230 | — | ◇ UNVERIFIED |
| FRFlambeau River Papers | Park Falls | WI | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| FIFlexoprint INC | Baldwin | WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| FIFlexoprint, INC. | Hudson | WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| FHFlint Hills Resources Pine Bend, LLC | Green Bay | WI | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| FHFlint Hills Resources Pine Bend, LLC | Stevens Point | WI | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| FWFoley Wood Products INC | Ellsworth | WI | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| FFForemost Farms USA | Cochrane | WI | Food Manufacturing311510 | — | ◇ UNVERIFIED |
| FFForemost Farms USA | Alma Center | WI | Food Manufacturing311510 | — | ◇ UNVERIFIED |
| FFForemost Farms USA Cooperative | Wilson | WI | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| F5Former 5r Processors - 5 Semi Trailers | Ladysmith | WI | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| FDFormer Diversey INC | Sturtevant | WI | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| FWFormer West Shore Industries INC | Sheboygan | WI | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| FTFormrite Tube Company | Two Rivers | WI | Fabricated Metal Product Manufacturing332990 | — | ◇ UNVERIFIED |
| FRFox River Valley Ethanol LLC - Pickett | Pickett | WI | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| FVFox Valley Energy Center LLC | Neenah | WI | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| FLFpm LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332810 | — | ◇ UNVERIFIED |
| FHFrank Holton & CO INC | Elkhorn | WI | Miscellaneous Manufacturing339992 | — | ◇ UNVERIFIED |
| FGFreudenberg-nok Gen Part Farnham Sealing | Necedah | WI | Miscellaneous Manufacturing339991 | — | ◇ UNVERIFIED |
| FSFreudenberg-nok Sealing Technologies Necedah | Necedah | WI | Miscellaneous Manufacturing339990 | — | ◇ UNVERIFIED |
| FCFriday Canning CORP Country Garden Div | Coleman | WI | Food Manufacturing311420 | — | ◇ UNVERIFIED |
| FPFront Porch Pets, INC. | Wild Rose | WI | Food Manufacturing311111 | 20-99 | ◇ UNVERIFIED |
| FSFull Stop Technics LLC | Milwaukee | WI | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| GWGaco Western INC | Waukesha | WI | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| GCGehl Company | West Bend | WI | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| GPGenerac Power Systems INC | Jefferson | WI | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| GOGe Oil & Gas Operations LLC | Oshkosh | WI | Machinery Manufacturing333912 | — | ◇ UNVERIFIED |
| GPGeorgia Pacific Consumer Products LP | Green Bay | WI | Paper Manufacturing322120 | — | ◇ UNVERIFIED |
| GPGeorgia Pacific CORP -superior | Superior | WI | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| GPGeorgia Pacific Wood Products LLC | Phillips | WI | Wood Product Manufacturing321210 | — | ◇ UNVERIFIED |
| GSGkn Sinter Metals | Germantown | WI | Fabricated Metal Product Manufacturing332117 | — | ◇ UNVERIFIED |
| GRGleason Roll Off & Recycling INC | Racine | WI | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| GRGlenn Rieder INC | Milwaukee | WI | Wood Product Manufacturing321910 | — | ◇ UNVERIFIED |
| GTGm Truck Group Janesville Assembly | Janesville | WI | Transportation Equipment Manufacturing336110 | — | ◇ UNVERIFIED |
| GFGordon Food Service - Kenosha | Kenosha | WI | Food Manufacturing311412 | — | ◇ UNVERIFIED |
| GCGossen CORP | Milwaukee | WI | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| GPGraphic Packaging International INC | Fort Atkinson | WI | Paper Manufacturing322210 | — | ◇ UNVERIFIED |
| GPGraphic Packaging International INC - Me | Menasha | WI | Paper Manufacturing322210 | — | ◇ UNVERIFIED |
| GLGreat Lakes Biochemical CO | Milwaukee | WI | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| GLGreat Lakes Kraut CO | Bear Creek | WI | Food Manufacturing311421 | — | ◇ UNVERIFIED |
| GBGrede - Berlin | Berlin | WI | Primary Metal Manufacturing331510 | — | ◇ UNVERIFIED |
| GBGreen Bay Packaging INC. | Wausau | WI | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| GFGreen Fuel Technologies Cashton LLC | Cashton | WI | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
 Greenheck Fan CORP | Schofield | WI | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| GLGreen-pak LLC | Fort Atkinson | WI | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
