| FCFurst-McNess Company (Rockford) | Rockford | IL | Food Manufacturing311119 | 20-99 | ◐ LIKELY ACTIVE |
| HTHydraulic Technologies USA LLC | Rockford | IL | Machinery Manufacturing333996 | — | ◐ LIKELY ACTIVE |
| IDImpact Direct Printing, LLC | Rockford | IL | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| IPIntegrated Packaging Machinery | Rockford | MI | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| JCJ.L. Clark | Rockford | PA | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
| JJ.L.Clark | Rockford | IL | Plastics and Rubber Products Manufacturing326112 | 100-499 | ◐ LIKELY ACTIVE |
| KPKadon Precision | Rockford | IL | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| LFLJ Fabricators | Rockford | IL | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| MIMolecular Imaging - Crystal Growth Facility | Rockford | TN | Computer and Electronic Product Manufacturing334510 | 20-99 | ◐ LIKELY ACTIVE |
| MIMolecular Imaging - Detector Center | Rockford | TN | Computer and Electronic Product Manufacturing334510 | 20-99 | ◐ LIKELY ACTIVE |
| MIMolecular Imaging - R&D | Rockford | TN | Computer and Electronic Product Manufacturing334510 | 20-99 | ◐ LIKELY ACTIVE |
| NVNovka Vodka | Rockford | IL | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC Rockford, Illinois | Rockford | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PJPeterson Jig & Fixture INC | Rockford | MI | Machinery Manufacturing333514 | — | ▲ REPORTED CLOSED |
| PWPHS West, LLC | Rockford | MN | Machinery Manufacturing333924 | 20-99 | ◐ LIKELY ACTIVE |
| PRProTrition Rockford Feed mill | Rockford | TN | Food Manufacturing311119 | 20-99 | ◐ LIKELY ACTIVE |
| RMReg-Ellen Machine Tool Corporation | Rockford | IL | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| RSReliable Speedy Shipping Limited Liability CO | Rockford | MN | Transportation Equipment Manufacturing336999 | — | ◐ LIKELY ACTIVE |
| RCRing Container Rockford | Rockford | IL | Plastics and Rubber Products Manufacturing326160 | 20-99 | ◐ LIKELY ACTIVE |
| RRockford | Rockford | IL | Fabricated Metal Product Manufacturing332111 | 1-19 | ◐ LIKELY ACTIVE |
| RCRockford CTSC | Rockford | IL | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| RMRockford Machined Products LLC | Rockford | IL | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| RPRockford Plant Foamular | Rockford | IL | Plastics and Rubber Products Manufacturing326140 | 20-99 | ◐ LIKELY ACTIVE |
| RRRockford Ready Mix | Rockford | MI | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| RTRockford TEC | Rockford | IL | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| RTRocky Top Organic Vineyard and Winery, INC. | Rockford | TN | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RRRogue River Winery LLC | Rockford | MI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SHSLE Holdings Rockford DBA: Sub Source | Rockford | IL | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| SISmith Industrial Rubber | Rockford | IL | Fabricated Metal Product Manufacturing332912 | 1-19 | ◐ LIKELY ACTIVE |
| STSpecmat Technologies, INC. | Rockford | TN | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| SISustainable Innovations INC | Rockford | IL | Chemical Manufacturing325411 | — | ◐ LIKELY ACTIVE |
| TPTetra Pak Incorportated Rockford | Rockford | IL | Machinery Manufacturing333241 | 1-19 | ◐ LIKELY ACTIVE |
The Home City Ice Company Rockford | Rockford | IL | Beverage and Tobacco Product Manufacturing312113 | 20-99 | ◐ LIKELY ACTIVE |
| TNThird Nature Brewing Company | Rockford | MI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TNTRIPAC North America LLC - Rockford | Rockford | IL | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| UPUniversal Products Inc | Rockford | MI | Machinery Manufacturing333248 | 20-99 | ◐ LIKELY ACTIVE |
| UIUSA IL Rockford Nelson Boulevard Plant | Rockford | IL | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
| UIUSA IL Rockford Technology Drive Plant | Rockford | IL | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| VAValue Added Distributors - Rockford | Rockford | IL | Fabricated Metal Product Manufacturing332912 | 20-99 | ◐ LIKELY ACTIVE |
| SISchmittel Industries, LLC | Rockford | IL | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| 4M425 Manufacturing, Inc. | Rockford | IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| 4M425 MFG Enterprises, LLC | Rockford | IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| 8N831 N Johnston Ave | Rockford | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ARAcme Rockford Group | Rockford | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AIAdhezion INC | Rockford | MI | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| AFAdvanced Fabricating Technology, LLC | Rockford | MI | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| ASAhmed Shakoor | Rockford | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ABAmerican Bentonite International, INC. | Rockford | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ABAmerican Bentonite International, INC. | Rockford | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ASAmerican Shaft CO | Rockford | IL | Machinery Manufacturing333996 | — | ◇ UNVERIFIED |