| TCTankcraft CORP | Walworth | WI | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| TSTarget Store T1895 | Milwaukee | WI | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| TDTaylor Dynamometer, Dba | Milwaukee | WI | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| TTechline | Waunakee | WI | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| TITecomet INC | Kenosha | WI | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| TPTecumseh Products Co-grafton Operations | Grafton | WI | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| TPTecumseh Products Co-new Holstein Operations | New Holstein | WI | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| TGTed Grob Corporation | Grafton | WI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| TDTeel Das, LLC | Baraboo | WI | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| TPTeel Plastics, LLC | Baraboo | WI | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| TFTekni-plex Flexibles LLC | Milwaukee | WI | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| TCTekra CORP Coating/laminating Div | New Berlin | WI | Paper Manufacturing322210 | — | ◇ UNVERIFIED |
| TITenneco INC. | Waupun | WI | Fabricated Metal Product Manufacturing332110 | — | ◇ UNVERIFIED |
| TUTerex Utilities | Waukesha | WI | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| TATextron Aviation INC | Milwaukee | WI | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| TGTextron Gse - Premier | Marinette | WI | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| TAThe Andersons INC. | Arena | WI | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| TAThe Antigo Cheese Company | Antigo | WI | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| TCThe Carlson CO | Madison | WI | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| TGThe Gund Company, INC. | Milwaukee | WI | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| TMThe Metal Ware Corporation | Two Rivers | WI | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
 The Printery | New Berlin | WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| TSThermal Spray Technologies INC | Sun Prairie | WI | Fabricated Metal Product Manufacturing332800 | — | ◇ UNVERIFIED |
| TEThermo Electron CORP. | Madison | WI | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| TTThe Trane Company - Main Complex | La Crosse | WI | Machinery Manufacturing333410 | — | ◇ UNVERIFIED |
| TVThe Vollrath Company LLC | Kewaunee | WI | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
| TTThiele Tanning CO | Milwaukee | WI | Leather and Allied Product Manufacturing316110 | — | ◇ UNVERIFIED |
| TPThilmany Papers Nicolet Mill | De Pere | WI | Paper Manufacturing322120 | — | ◇ UNVERIFIED |
| TRTodd's Redi Mix Concrete | Ashland | WI | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TRTodd's Redimix Concrete | Rice Lake | WI | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TAToshiba America Energy Systems CORP | West Allis | WI | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| TMTramont Manufacturing LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| TMTramont Manufacturing LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| TPTrane Plt 7 Manufacturing | La Crosse | WI | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TSTrane - South Lacrosse Operat Ions | La Crosse | WI | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TCTransportation Center | Wisconsin Rapids | WI | Paper Manufacturing322100 | — | ◇ UNVERIFIED |
| TBTrek Bicycle CORP | Waterloo | WI | Transportation Equipment Manufacturing336990 | — | ◇ UNVERIFIED |
| TCTrempealeau County Highway Dept | Whitehall | WI | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TCTri Clover INC | Kenosha | WI | Fabricated Metal Product Manufacturing332900 | — | ◇ UNVERIFIED |
| TLTrostel LTD | Lake Geneva | WI | Plastics and Rubber Products Manufacturing326291 | — | ◇ UNVERIFIED |
| TWTrostel Wm-1 | Whitewater | WI | Plastics and Rubber Products Manufacturing326291 | — | ◇ UNVERIFIED |
| TITrudell Industrial Finishing | De Pere | WI | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| TITrudell Industrial Finishing LLC | De Pere | WI | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| TLTru Line Lithographing INC | Sturtevant | WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| TSTruvant - South | Prairie Du Chien | WI | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| TATrw Automotive | Ettrick | WI | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
| TST Shirts International | Oak Creek | WI | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| TTTufco Technologies INC | Green Bay | WI | Textile Mills313230 | — | ◇ UNVERIFIED |
| TGTweet Garot Mechanical, INC. | Tomahawk | WI | Fabricated Metal Product Manufacturing332000 | — | ◇ UNVERIFIED |
| TFTwist Farm Equipment | Elkhorn | WI | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
