| RDRyobi Die Casting (usa), INC. | Shelbyville | IN | Primary Metal Manufacturing331521 | 500+ | ◐ LIKELY ACTIVE |
| SFSampson Fiberglass Incorporated | Mishawaka | IN | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SPSaratoga Potato Chips | Fort Wayne | IN | Food Manufacturing311919 | 100-499 | ◐ LIKELY ACTIVE |
| SFSauder Feeds, Inc. | Grabill | IN | Food Manufacturing311119 | 20-99 | ◐ LIKELY ACTIVE |
| SMSauder Manufacturing Company | New Haven | IN | Furniture and Related Product Manufacturing337127 | 100-499 | ◐ LIKELY ACTIVE |
| SFSensient Flavors, INC. | Indianapolis | IN | Food Manufacturing311920 | — | ◐ LIKELY ACTIVE |
| SLShoremet LLC | Valparaiso | IN | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| SCSkjodt-barrett Contract Packaging LLC | Lebanon | IN | Food Manufacturing311999 | 100-499 | ◐ LIKELY ACTIVE |
| SCSmc Corporation of America | Noblesville | IN | Machinery Manufacturing333995 | 500+ | ◐ LIKELY ACTIVE |
| SBSmith Brothers PLANT 1 | Berne | IN | Furniture and Related Product Manufacturing337121 | 100-499 | ◐ LIKELY ACTIVE |
| SMSnavelys Machine & Manufacturing CO INC | Peru | IN | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
Sportcrafters, INC | Granger | IN | Miscellaneous Manufacturing339920 | 1-19 | ◐ LIKELY ACTIVE |
| SOStar of the West Milling CO. | Ligonier | IN | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
Star Technology Incorporated | Waterloo | IN | Chemical Manufacturing325520 | 1-19 | ◐ LIKELY ACTIVE |
| SMStephens Machine Incorporated | Kokomo | IN | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| SMStephens Machine Incorporated | Kokomo | IN | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| SCStone City Products, Inc. | Bedford | IN | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
| SIStoutco Incorporated | Bristol | IN | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| SVStrauss Veal Feeds Incorporated | North Manchester | IN | Food Manufacturing311119 | 100-499 | ◐ LIKELY ACTIVE |
| STStrick Trailers LLC | Monroe | IN | Transportation Equipment Manufacturing336120 | 20-99 | ◐ LIKELY ACTIVE |
| SCS.u.s Cast Products INC. | Logansport | IN | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| SGSuzuki Garphyttan | South Bend | IN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| SESystems Engineering & Sales CO | Fort Wayne | IN | Machinery Manufacturing333911 | 20-99 | ◐ LIKELY ACTIVE |
| TATenneco Automotive Operating Company Incorporated | Ligonier | IN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| TATerex Advance Mixer INC | Fort Wayne | IN | Machinery Manufacturing333120 | 100-499 | ◐ LIKELY ACTIVE |
| TVThiesing Veneer Company, INC. | Mooresville | IN | Wood Product Manufacturing321211 | 20-99 | ◐ LIKELY ACTIVE |
| TPThursday Pools | Fortville | IN | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| TCTmf Center INC | Williamsport | IN | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| TMToyota Material Handling, INC | Columbus | IN | Machinery Manufacturing333924 | 500+ | ◐ LIKELY ACTIVE |
| TRTriangle Rubber CO INC | Goshen | IN | Plastics and Rubber Products Manufacturing326220 | 100-499 | ◐ LIKELY ACTIVE |
| TATruck Accessories Group, LLC. | Elkhart | IN | Transportation Equipment Manufacturing336214 | 100-499 | ◐ LIKELY ACTIVE |
| TFTube Fabrication Industries, INC | Logansport | IN | Fabricated Metal Product Manufacturing332996 | 20-99 | ◐ LIKELY ACTIVE |
Tyler Truss LLC | Pendleton | IN | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| UTUnion Tool CORP the | Warsaw | IN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| UBUniversal Bearings LLC | Bremen | IN | Fabricated Metal Product Manufacturing332991 | 100-499 | ◐ LIKELY ACTIVE |
| UPUS Premier Tube Mills, LLC | Madison | IN | Primary Metal Manufacturing331111 | 100-499 | ◐ LIKELY ACTIVE |
Wabash National CORP | Lafayette | IN | Wood Product Manufacturing321912 | — | ◐ LIKELY ACTIVE |
| WBWarsaw Black Oxide, INC. | Burket | IN | Fabricated Metal Product Manufacturing332813 | 1-19 | ◐ LIKELY ACTIVE |
| WCWarsaw Chemical CO INC | Warsaw | IN | Chemical Manufacturing325611 | 20-99 | ◐ LIKELY ACTIVE |
| WFWest Fork Whiskey | Indianapolis | IN | Beverage and Tobacco Product Manufacturing312140 | 1-19 | ◐ LIKELY ACTIVE |
| WEWhitcraft Enterprises DBA Precise Manufacturing | Fort Wayne | IN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| WIWilloughby Industries INC | Indianapolis | IN | Plastics and Rubber Products Manufacturing326191 | 100-499 | ◐ LIKELY ACTIVE |
| 1M105082 - Mursix Corporation | Yorktown | IN | Fabricated Metal Product Manufacturing332116 | 100-499 | ◐ LIKELY ACTIVE |
| 1I107270 - Indiana Steel and Engineering Corporation | Bedford | IN | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| ATAhaus Tool CO INC | Richmond | IN | Machinery Manufacturing333514 | 100-499 | ◐ LIKELY ACTIVE |
| AAAmerican Art Clay CO INC | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327110 | 100-499 | ◐ LIKELY ACTIVE |
| AHAmos Hill Associates, INC. | Edinburgh | IN | Wood Product Manufacturing321211 | 100-499 | ◐ LIKELY ACTIVE |
| APAms Production Machining | Plainfield | IN | Fabricated Metal Product Manufacturing332919 | 20-99 | ◐ LIKELY ACTIVE |
| BBBahr Brothers Manufacturing, INC. | Marion | IN | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| BBBall Brass & Aluminum Foundry | Auburn | IN | Primary Metal Manufacturing331524 | 1-19 | ◐ LIKELY ACTIVE |