| KCKb Cores | Kankakee | IL | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| KKomline-Barnes | Rockford | IL | Machinery Manufacturing333999 | 100-499 | ◐ LIKELY ACTIVE |
| MTManor Tool & Mfg CO | Schiller Park | IL | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| MEMaren Engineering CORP | South Holland | IL | Machinery Manufacturing333111 | 20-99 | ◐ LIKELY ACTIVE |
| MDMatrix Design LLC | Bartlett | IL | Machinery Manufacturing333999 | 20-99 | ◐ LIKELY ACTIVE |
| MTMcCurdy Tool and Machining Company | Caledonia | IL | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| MHMFS Holdings | Mchenry | IL | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| MFMid-west Feeder, INC. | Belvidere | IL | Machinery Manufacturing333515 | 1-19 | ◐ LIKELY ACTIVE |
| MPModern Process Equipment INC | Chicago | IL | Machinery Manufacturing333241 | 20-99 | ◐ LIKELY ACTIVE |
| NANorth American Clutch & Driveline, Inc | Machesney Park | IL | Machinery Manufacturing333613 | 20-99 | ◐ LIKELY ACTIVE |
| NNvenia | Wood Dale | IL | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
Oerlikon Balzers Coating USA Inc - Geneva, IL | Geneva | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| PPamarcoBatavia | Batavia | IL | Machinery Manufacturing333244 | 20-99 | ◐ LIKELY ACTIVE |
| PPPanacea Products / Kay Home | Antioch | IL | Machinery Manufacturing333112 | 20-99 | ◐ LIKELY ACTIVE |
| PCPeddinghaus Corporation - ASW | Kankakee | IL | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| PLPregis LLC | Elgin | IL | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| RERheo Engineering | Peoria | IL | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| SMSeaga Manufacturing, INC. | Freeport | IL | Machinery Manufacturing333310 | 20-99 | ◐ LIKELY ACTIVE |
| SISerac INC | Carol Stream | IL | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| SFSmith Filter Corporation | Moline | IL | Machinery Manufacturing333413 | 20-99 | ◐ LIKELY ACTIVE |
| SMSolberg Manufacturing INC. | Itasca | IL | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| SCSollami CO | Herrin | IL | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| SSpartanics | Rolling Meadows | IL | Machinery Manufacturing333244 | 20-99 | ◐ LIKELY ACTIVE |
| TMThunderbird Molding Illinois LLC | Elgin | IL | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| TTTrend Technologies | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332112 | 100-499 | ◐ LIKELY ACTIVE |
| WEWarner Electric Motion Control Systems | Marengo | IL | Machinery Manufacturing333513 | — | ◐ LIKELY ACTIVE |
| WSWeld-rite Services, INC. | Bedford Park | IL | Machinery Manufacturing333992 | 1-19 | ◐ LIKELY ACTIVE |
| WRW. R. Pabich Mfg. Co., INC | Chicago | IL | Machinery Manufacturing333993 | 1-19 | ◐ LIKELY ACTIVE |
| YMYetter Manufacturing CO. | Macomb | IL | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| CTCarlinville Truck Equipment INC | Carlinville | IL | Machinery Manufacturing333924 | — | ◐ LIKELY ACTIVE |
| CCaterpillar | Aurora | IL | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| CTCaterpillar Tractor CO | Pontiac | IL | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| COCd One Price Cleaners | Palatine | IL | Machinery Manufacturing333312 | — | ◐ LIKELY ACTIVE |
| CACnh America LLC | Carol Stream | IL | Machinery Manufacturing333993 | — | ◐ LIKELY ACTIVE |
| CSConverting Systems, INC. | Schaumburg | IL | Machinery Manufacturing333248 | 1-19 | ◐ LIKELY ACTIVE |
| CECranes & Equipment CORP. | Peoria | IL | Machinery Manufacturing333249 | 1-19 | ◐ LIKELY ACTIVE |
| DSDry Systems Technologies, INC. | Woodridge | IL | Machinery Manufacturing333131 | 20-99 | ◐ LIKELY ACTIVE |
| EIEtnyre International, LTD. | Oregon | IL | Machinery Manufacturing333120 | 500+ | ◐ LIKELY ACTIVE |
| EGEvapco - Greenup, Il | Greenup | IL | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| GDGardner - Denver Petroleum Equipment | Quincy | IL | Machinery Manufacturing333911 | — | ◐ LIKELY ACTIVE |
| GWGraham Welding | Decatur | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| HCHeim CORP | Bedford Park | IL | Machinery Manufacturing333513 | — | ◐ LIKELY ACTIVE |
| MLMitsubishi Logisnext Americas | Marengo | IL | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| MRMullins Race Engines | Mount Olive | IL | Machinery Manufacturing333618 | 1-19 | ◐ LIKELY ACTIVE |
| PSPower Solutions International | Itasca | IL | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
Pro Beam USA INC | Plainfield | IL | Machinery Manufacturing333992 | — | ◐ LIKELY ACTIVE |
| SRSgs Refrigeration, INC. | Dixon | IL | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| SPSpringfield Plastics Company | Auburn | IL | Machinery Manufacturing333298 | 20-99 | ◐ LIKELY ACTIVE |
| SAStertil Alm CORP. | Streator | IL | Machinery Manufacturing333924 | 20-99 | ◐ LIKELY ACTIVE |
| TCTDK Consulting Inc. | Beckemeyer | IL | Machinery Manufacturing333131 | 1-19 | ◐ LIKELY ACTIVE |