| BSBest Sea-pack of Texas Facility | Danbury | TX | Food Manufacturing311712 | 20-99 | ◇ UNVERIFIED |
| CCChem-tron CO. | Danbury | CT | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| FPFairfield Processing CORP | Danbury | CT | Miscellaneous Manufacturing339999 | — | ◐ LIKELY ACTIVE |
Fuelcell Energy INC | Danbury | CT | Electrical Equipment, Appliance & Component Manufacturing335999 | 100-499 | ◐ LIKELY ACTIVE |
| GEGoodrich Electro-optical Systems | Danbury | CT | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| RBRadial Bearing | Danbury | CT | Fabricated Metal Product Manufacturing332991 | 20-99 | ◐ LIKELY ACTIVE |
| VPVillarina Pasta & Fine Foods, INC | Danbury | CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| KIKimchuck INC | Danbury | CT | Electrical Equipment, Appliance & Component Manufacturing335999 | 20-99 | ◐ LIKELY ACTIVE |
| RCRsa CORP | Danbury | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| BCBlue Crest INC | Danbury | CT | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| PWPraxair - Worldwide Headquarters | Danbury | CT | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| RFRepublic Foil, INC | Danbury | CT | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| 9D908 Danbury | Danbury | CT | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| ASAllied Sinterings Incorporated | Danbury | CT | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| DIDunmore International Corporation - Brewster | Danbury | NY | Plastics and Rubber Products Manufacturing326113 | 20-99 | ◐ LIKELY ACTIVE |
| ELElectroformers, LLC | Danbury | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| EIEmpire Importers and Distributors, Inc. | Danbury | CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| GFGallucci's Fine Foods | Danbury | CT | Food Manufacturing311412 | 20-99 | ◐ LIKELY ACTIVE |
| HWHaunting Whisper Spirits | Danbury | NH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| KFKibberia Foods LLC | Danbury | CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| OBOmaha Beef Company Inc. | Danbury | CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| PMParker Medical | Danbury | CT | Computer and Electronic Product Manufacturing334517 | 20-99 | ◐ LIKELY ACTIVE |
| RCR.S.A. Corp. | Danbury | CT | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| SWStewarts Wood Products | Danbury | NC | Wood Product Manufacturing321113 | 20-99 | ◐ LIKELY ACTIVE |
| TTTommy's Too High Wines | Danbury | WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MWMachine & Welding of Danbury Inc. | Danbury | NC | Fabricated Metal Product Manufacturing332999 | 1-19 | ◇ UNVERIFIED |
| AGAll Granite and Marble Corporation | Danbury | CT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ALApplied Laser Solutions, INC | Danbury | CT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ASA. Silverio Asphalt Paving | Danbury | CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CICadenzia Innovations, INC. | Danbury | CT | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| DSDanbury Signs, INC. | Danbury | CT | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| EIErgotech, INC. | Danbury | CT | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| KKKingswood Kitchens INC | Danbury | CT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| OEOrwick Enterprises | Danbury | CT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| PEPmc Engineering, LLC | Danbury | CT | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| TITeknicircuits INC | Danbury | CT | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| TCThe Counterworks, LLC | Danbury | CT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| TCTilcon Connecticut INC. - Danbury | Danbury | CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TSTimeless Stone Marble & Granite, INC | Danbury | CT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ZTZentex Tool Corporation | Danbury | CT | Transportation Equipment Manufacturing336310 | — | ◇ UNVERIFIED |