| HSHeidtman Steel Products | Butler | IN | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| MIMultimatic Indiana Incorporated | Butler | IN | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| NMNew Millenium Building Systems LLC | Butler | IN | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SDSteel Dynamics Incorporated | Butler | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| TCTherma-tru CORP. - Butler | Butler | IN | Wood Product Manufacturing321911 | — | ◐ LIKELY ACTIVE |
| JIJanus IN | Butler | IN | Fabricated Metal Product Manufacturing332321 | 100-499 | ◐ LIKELY ACTIVE |
| NMNew Millennium Building Systems, LLC. - Butler | Butler | IN | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| SGStafford Gravel Incorporated | Butler | IN | Nonmetallic Mineral Product Manufacturing327991 | — | ◐ LIKELY ACTIVE |
| CACj Automotive Indiana LLC | Butler | IN | Fabricated Metal Product Manufacturing332216 | — | ◐ LIKELY ACTIVE |
| BMButler Mill Service Company | Butler | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| CMColor Master INC | Butler | IN | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| HTHendrickson Truck Suspension Systems Plant 2 | Butler | IN | Transportation Equipment Manufacturing336330 | — | ◇ UNVERIFIED |
| TWTri-wall Weyerhaeuser CO | Butler | IN | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| APAir Products and Chemicals Inc.- Butler Facility | Butler | IN | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| IPInternational Paper Butler | Butler | IN | Paper Manufacturing322211 | 100-499 | ◐ LIKELY ACTIVE |
| LELevy Environmental Services Company dba Butler Mill Service | Butler | IN | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| SDSteel Dynamics, Inc. - Flat Roll Group - Butler | Butler | IN | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| CCCitation CORP | Butler | IN | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| DMDekalb Molded Plastics | Butler | IN | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| FRForest River Incorporated Plant 79 | Butler | IN | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |