| PFPremier Fiberglass Company INC | Elkhart | IN | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| PCPremium Custom Painting Company | Elkhart | IN | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| PSPrestress Services Industries Decatur | Decatur | IN | Nonmetallic Mineral Product Manufacturing327332 | 20-99 | ◐ LIKELY ACTIVE |
| PPPrimex Plastics Corporation | Richmond | IN | Plastics and Rubber Products Manufacturing326112 | 100-499 | ◐ LIKELY ACTIVE |
| PSPvs Steel Services INC | Portage | IN | Chemical Manufacturing325131 | — | ◐ LIKELY ACTIVE |
| PFPwc Fabrication | Ft Wayne | IN | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| QMQuality Machine & Tool Works, Inc. | Columbus | IN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| QTQuick Tanks, INC. | Kendallville | IN | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| RPRaybestos Powertrain LLC | Sullivan | IN | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| RPRaybestos Powertrain LLC | Crawfordsville | IN | Chemical Manufacturing325520 | — | ◐ LIKELY ACTIVE |
| RCReagent Chemical & Research INC | Knox | IN | Miscellaneous Manufacturing339920 | — | ◐ LIKELY ACTIVE |
| RAReal Alloy Specification, LLC - Wabash, IN | Wabash | IN | Primary Metal Manufacturing331314 | 100-499 | ◐ LIKELY ACTIVE |
| RMRea Magnet Wire CO INC | Fort Wayne | IN | Plastics and Rubber Products Manufacturing326291 | — | ◐ LIKELY ACTIVE |
| RTReliable Tool and Machine, Inc | Kendallville | IN | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| RPResco Products INC | Hammond | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| RPResonac Powdered Metals America, INC | Greensburg | IN | Primary Metal Manufacturing331492 | 100-499 | ◐ LIKELY ACTIVE |
| RERiley Equipment | Vincennes | IN | Machinery Manufacturing333111 | 20-99 | ◐ LIKELY ACTIVE |
| RCRock-tenn Company | Eaton | IN | Paper Manufacturing322130 | — | ◐ LIKELY ACTIVE |
| RDRr Donnelly & Sons CO | Warsaw | IN | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| RTR&R Technologies | Edinburgh | IN | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SGSanko Gosei Technologies USA | Fort Wayne | IN | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| SISchafer Industries, INC. | South Bend | IN | Machinery Manufacturing333612 | 20-99 | ◐ LIKELY ACTIVE |
| SDScientific Developments Incorproated | Elkhart | IN | Plastics and Rubber Products Manufacturing326299 | 20-99 | ◐ LIKELY ACTIVE |
| SLScp Limited Incorporated | Auburn | IN | Computer and Electronic Product Manufacturing334512 | 20-99 | ◐ LIKELY ACTIVE |
| SLSdi Lafarga LLC - Copperworks Facility | New Haven | IN | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| SUSealCorp USA | Evansville | IN | Plastics and Rubber Products Manufacturing326299 | 20-99 | ◐ LIKELY ACTIVE |
| SHSiemens Healthcare Diagnostics Incorporated | Mishawaka | IN | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |
| SCSilgan Closures LLC | Richmond | IN | Fabricated Metal Product Manufacturing332115 | — | ◐ LIKELY ACTIVE |
| SCSilgan Closures LLC | Evansville | IN | Fabricated Metal Product Manufacturing332115 | — | ◐ LIKELY ACTIVE |
| SPSilgan Plastics Corporation | Ligonier | IN | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| SSSingota Solutions | Bloomington | IN | Chemical Manufacturing325412 | 100-499 | ◐ LIKELY ACTIVE |
| SCSmith Creek Inc | Borden | IN | Wood Product Manufacturing321999 | 20-99 | ◐ LIKELY ACTIVE |
| SNSomaschini North America | South Bend | IN | Transportation Equipment Manufacturing336310 | 1-19 | ◐ LIKELY ACTIVE |
| SPSpaceGuard Products | Seymour | IN | Fabricated Metal Product Manufacturing332618 | 20-99 | ◐ LIKELY ACTIVE |
| SMSpartan Motors USA Incorporated | Bristol | IN | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| SRSpecialty Rim Supply | Terre Haute | IN | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| SEStarplus Energy | Kokomo | IN | Electrical Equipment, Appliance & Component Manufacturing335910 | 500+ | ◐ LIKELY ACTIVE |
| SDSteel Dynamics INC - Engineered Bar Products Div | Pittsboro | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SDSteel Dynamics Incorporated | Butler | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| SDSteel Dynamics Structural | Columbia City | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| SESterling Electric | Indianapolis | IN | Machinery Manufacturing333612 | 20-99 | ◐ LIKELY ACTIVE |
| SPSun Polymers | Mooresville | IN | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| SASunright America Incorporated | Columbus | IN | Fabricated Metal Product Manufacturing332722 | 100-499 | ◐ LIKELY ACTIVE |
| SASuperior Aluminum Alloys LLC | New Haven | IN | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| SFSuperior Forest Products LLC | Montezuma | IN | Wood Product Manufacturing321113 | — | ◐ LIKELY ACTIVE |
| SSSyndicate Store Fixtures | Middlebury | IN | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| TFTask Force Tips | Valparaiso | IN | Fabricated Metal Product Manufacturing332919 | 100-499 | ◐ LIKELY ACTIVE |
| TBTexmo Blank USA Inc | Warsaw | IN | Machinery Manufacturing333511 | 20-99 | ◐ LIKELY ACTIVE |
| TAThe Andersons Marathon Holdings LLC | Logansport | IN | Chemical Manufacturing325193 | — | ◐ LIKELY ACTIVE |
| TAThe Andersons Seymour Terminal | Seymour | IN | Chemical Manufacturing325311 | — | ◐ LIKELY ACTIVE |