| SDSony DADC US Inc | Terre Haute | 100–499 | ◐ LIKELY ACTIVE |
| TFTeledyne Flir Defense, INC | West Lafayette | — | ◐ LIKELY ACTIVE |
| CCCts CORP Automotive Products Div | Berne | — | ◐ LIKELY ACTIVE |
| CMCts Microelectronics | West Lafayette | — | ◐ LIKELY ACTIVE |
| IIInvensys INC | North Manchester | — | ◐ LIKELY ACTIVE |
| AEAlpine Electronics Manufacturing of America Incorporated | Greenwood | — | ◇ UNVERIFIED |
| CACrown Audio, INC | Elkhart | — | ◇ UNVERIFIED |
| CCCts Corporation of Elkhart | Elkhart | — | ◇ UNVERIFIED |
| DIDwyer Instruments INC | Wolcott | — | ◇ UNVERIFIED |
| ETEnvironmental Test Systems | Elkhart | — | ◇ UNVERIFIED |
| GEGeneral Electric | Indianapolis | — | ◇ UNVERIFIED |
| HCHarris Corporation | Fort Wayne | — | ◇ UNVERIFIED |
| JCJohnson Controls, INC | Goshen | — | ◇ UNVERIFIED |
| RSRaytheon Systems CO | Columbia City | — | ◇ UNVERIFIED |
| STSensata Technologies | Huntington | — | ◇ UNVERIFIED |
| SHSmi Holding LLC C/o Siemens Corporation | Princeton | — | ◇ UNVERIFIED |
| SDSony Digital Audio Disc Corporation | Terre Haute | — | ◇ UNVERIFIED |
| SMSunshine Manufacturing LLC | Indianapolis | — | ◇ UNVERIFIED |
| TMThomson Multimedia INC. | Marion | — | ◇ UNVERIFIED |
| TMTritech Manufacturing Incorporated | Fort Wayne | — | ◇ UNVERIFIED |
Undersea Sensor Systems, INC. | Columbia City | — | ◇ UNVERIFIED |
| UTUnited Technologies Electronic Controls | Huntington | — | ◇ UNVERIFIED |
| UNU.s. Navy Naval Air Warfare Center Aircraft Div. | Indianapolis | — | ◇ UNVERIFIED |
| 0M091 Munster, IN (VEC) | Munster | 1–19 | ◐ LIKELY ACTIVE |
| 1B157 Bremen | Nappanee | 1–19 | ◐ LIKELY ACTIVE |
| 3M3 Micron Laser Technology, LLC | Indianapolis | — | ◐ LIKELY ACTIVE |
| AAAfter Action Medical and Dental Supply, LLC | Camby | — | ◐ LIKELY ACTIVE |
| BSBAE Systems Electronic Systems FIN | Fort Wayne | 500+ | ◐ LIKELY ACTIVE |
| BSBae Systems Information and Electronic Systems Integration INC. | Fort Wayne | — | ◐ LIKELY ACTIVE |
| BCBeckman Coulter - Indianapolis (RD) | Indianapolis | 100–499 | ◐ LIKELY ACTIVE |
| BVBiofeedback Vrx, INC. | Indianapolis | — | ◐ LIKELY ACTIVE |
| CACmj & Associates Corporation | Richmond | — | ◐ LIKELY ACTIVE |
| CFContact Fabricators of Indiana, INC. | Middletown | — | ◐ LIKELY ACTIVE |
| CMCustom Magnetics, Inc. | North Manchester | 20–99 | ◐ LIKELY ACTIVE |
Doble Engineering Company (Indianapolis, IN) | Indianapolis | 1–19 | ◐ LIKELY ACTIVE |
| DIDwyer Instruments Inc - Kingsbury IN | Kingsbury | 20–99 | ◐ LIKELY ACTIVE |
| DIDwyer Instruments Inc - Michigan City IN | Michigan City | 100–499 | ◐ LIKELY ACTIVE |
| DIDwyer Instruments Inc - Wolcott IN | Wolcott | 100–499 | ◐ LIKELY ACTIVE |
| EErapsco | Columbia City | — | ▲ REPORTED CLOSED |
| ECEti Controls INC | South Bend | 1–19 | ◐ LIKELY ACTIVE |
| EEExcel Electronics Inc | Ekhart | 20–99 | ◐ LIKELY ACTIVE |
| ELExtrasurplus LLC | Gary | — | ◐ LIKELY ACTIVE |
George E. Booth Co. | Greenwood | 100–499 | ◐ LIKELY ACTIVE |
| HIHP Inc. Plainfield | Plainfield | 20–99 | ◐ LIKELY ACTIVE |
| HHuntertown | Fort Wayne | 100–499 | ◐ LIKELY ACTIVE |
| IDIntegrity Defense Services INC. | Springville | — | ◐ LIKELY ACTIVE |
| KIKinetitec, INC. | Indianapolis | — | ◐ LIKELY ACTIVE |
| KGKlipsch Group Incorporated - Indiana | Indianapolis | 20–99 | ◐ LIKELY ACTIVE |
| KMKreuter Manufacturing CO INC | New Paris | — | ◐ LIKELY ACTIVE |
| LL3Harris | Fort Wayne | 500+ | ◐ LIKELY ACTIVE |