| CUCal-comp USA Indiana INC | Logansport | 100–499 | ◐ LIKELY ACTIVE |
| MEMarshall Electric CORP | Rochester | 1–19 | ◐ LIKELY ACTIVE |
Calleralert LLC | Evansville | — | ◐ LIKELY ACTIVE |
Earsmart Ai, INC | Indianapolis | — | ◐ LIKELY ACTIVE |
Electronic Communication Systems Incorporated | Bloomington | — | ◐ LIKELY ACTIVE |
Fleming & Associates Calibration, INC. | Indianapolis | — | ◐ LIKELY ACTIVE |
Flight1 Aviation Technologies, INC. | Wabash | — | ◐ LIKELY ACTIVE |
| KMKreuter Manufacturing CO INC | New Paris | 100–499 | ◐ LIKELY ACTIVE |
Magitek, LLC | Hamilton | — | ◐ LIKELY ACTIVE |
| MCMiltec Circuits, LLC | Leo | — | ◐ LIKELY ACTIVE |
Pacer USA LLC | Elkhart | — | ◐ LIKELY ACTIVE |
| SDSony DADC US Inc | Terre Haute | 100–499 | ◐ LIKELY ACTIVE |
| 1S107012 - Skytech Ii INC | Fort Wayne | 20–99 | ◐ LIKELY ACTIVE |
| UTUnited Technologies Electronic Controls | Huntington | — | ◇ UNVERIFIED |
| BCBeckman Coulter Incorporated | Indianapolis | — | ◐ LIKELY ACTIVE |
| HEHeraeus Electro-Nite Co., Peru, LLC | Peru | 100–499 | ◐ LIKELY ACTIVE |
| TTTri Tec Systems, LLC | Decatur | 1–19 | ◐ LIKELY ACTIVE |
| CCCts CORP Automotive Products Div | Berne | — | ◐ LIKELY ACTIVE |
| CMCts Microelectronics | West Lafayette | — | ◐ LIKELY ACTIVE |
| FQFoxconn Q Edge | Plainfield | 20–99 | ◐ LIKELY ACTIVE |
| IIInvensys INC | North Manchester | — | ◐ LIKELY ACTIVE |
| KMKendrion Mishawaka | Mishawaka | 20–99 | ◐ LIKELY ACTIVE |
| RTRaytheon Technical Services Company, LLC | Indianapolis | — | ◐ LIKELY ACTIVE |
| UTUnited Technologies CORP Dba Carrier CORP | Indianapolis | — | ◐ LIKELY ACTIVE |
| AEAlpine Electronics Manufacturing of America Incorporated | Greenwood | — | ◇ UNVERIFIED |
| CACrown Audio, INC | Elkhart | — | ◇ UNVERIFIED |
| CCCts Corporation of Elkhart | Elkhart | — | ◇ UNVERIFIED |
| DIDwyer Instruments INC | Wakarusa | — | ▲ REPORTED CLOSED |
| DIDwyer Instruments INC | Wolcott | — | ◇ UNVERIFIED |
| ETEnvironmental Test Systems | Elkhart | — | ◇ UNVERIFIED |
| GEGeneral Electric | Indianapolis | — | ◇ UNVERIFIED |
| HCHarris Corporation | Fort Wayne | — | ◇ UNVERIFIED |
| JCJohnson Controls, INC | Goshen | — | ◇ UNVERIFIED |
| KEKauffman Engineering Incorporated | Logansport | — | ▲ REPORTED CLOSED |
| RSRaytheon Systems CO | Columbia City | — | ◇ UNVERIFIED |
| SHSmi Holding LLC C/o Siemens Corporation | Princeton | — | ◇ UNVERIFIED |
| SMSunshine Manufacturing LLC | Indianapolis | — | ◇ UNVERIFIED |
| TMThomson Multimedia INC. | Marion | — | ◇ UNVERIFIED |
| TMTritech Manufacturing Incorporated | Fort Wayne | — | ◇ 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 |
| 22207_3924 | Fort Wayne | 100–499 | ◐ 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 |
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 |