| SBSterling Boiler & Mechanical LLC | Evansville | IN | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| SCSterling Casting | Bluffton | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SDStonhard Division of Stoncor Group Incorpoated | Fort Wayne | IN | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SIStyline Ind. Plant #2 | Huntingburg | IN | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
 Sun Chemical | Indianapolis | IN | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| Sun Chemical Corporation | Frankfort | IN | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| SMSunshine Manufacturing LLC | Indianapolis | IN | Computer and Electronic Product Manufacturing334414 | — | ◇ UNVERIFIED |
| SVSun Valley Rv | Howe | IN | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| SISurtec INC | Valparaiso | IN | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SMSynergy Management | Monon | IN | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| TAT and J Plating INC | Marion | IN | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| TCTaylor CORP Mcphersons Div | Sunman | IN | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| TMTaylor Made Systems | Kendallville | IN | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| TDTegrant Diversified Brands, INC. | Michigan City | IN | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| TATemple and Temple Excavating and Paving Incorporated | Salem | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TTempurpedic | Crawfordsville | IN | Furniture and Related Product Manufacturing337910 | — | ◇ UNVERIFIED |
| TPTetra Pak Materials, LP | Fort Wayne | IN | Paper Manufacturing322219 | — | ◇ UNVERIFIED |
| TAThe Art of Design, INC. | Elkhart | IN | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| TBThe Braun Corporation | Winamac | IN | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| TCThe Canam Steel Corporation | Lafayette | IN | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| TCThe Country Woodshop LLC | Goshen | IN | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| TJThe Jackson Group (jackson Press, INC. & Total Response, INC | Indianapolis | IN | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TKThe Karges Furniture Co., INC. | Evansville | IN | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| TKThe Kay Company, INC | Frankfort | IN | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| TMThomson Multimedia INC. | Marion | IN | Computer and Electronic Product Manufacturing334411 | — | ◇ UNVERIFIED |
| TMThor Motor Coach Inc- Bristol | Bristol | IN | Transportation Equipment Manufacturing336213 | — | ◇ UNVERIFIED |
| TRThree Rivers Plating | Fort Wayne | IN | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| TITin, INC. D/b/a Temple-inland | Indianapolis | IN | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| TMTitan Metal Worx | Fort Wayne | IN | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| TGTko Graphix | Plainfield | IN | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| TLToa (usa), LLC | Mooresville | IN | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| TPToppan Photomasks INC | Kokomo | IN | Printing and Related Support Activities323122 | — | ◇ UNVERIFIED |
| TITotal Industries | South Bend | IN | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| TATower Automotive | Kendallville | IN | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| TATower Automotive Products Company, INC. | Corydon | IN | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| TCTpc Ctp Sheeetmetal Division | Indianapolis | IN | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| TOT.p. Orthodontics-treatment Plant | Westville | IN | Miscellaneous Manufacturing339114 | — | ◇ UNVERIFIED |
| TATrans Agg,inc. Dba Gibbco, INC. | Lawrenceburg | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TDTransformer Decommissioning INC D/b/a Emerald Transformer | Nabb | IN | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| TCTraylor Chemical & Supply Company Incorporated | Royal Center | IN | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| TFTree Free Plastic Lumber Yard LLC | Marion | IN | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| TTrelleborg | Logansport | IN | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| TSTrelleborg Sealing Profiles U.s. INC. | Bristol | IN | Miscellaneous Manufacturing339991 | — | ◇ UNVERIFIED |
| TATri-county Asphalt | Otwell | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TMTrident Machine Technologies, INC. | Hammond | IN | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| TCTri-lakes Container | Pierceton | IN | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| TPTri Pac INC. | South Bend | IN | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| TTri-remanufacturing | Terre Haute | IN | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| TMTritech Manufacturing Incorporated | Fort Wayne | IN | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| TWTri-wall Weyerhaeuser CO | Butler | IN | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
