| JMJohn M. Dean Company | Putnam, CT | Fabricated Metal Product Manufacturing332618 | — | ◐ LIKELY ACTIVE |
| CMC & M CORP | Wauregan, CT | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| IPIndustrial Pallet, L.l.c. | Eastford, CT | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| IPInternational Paper Container Plant | Putnam, CT | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| KAKaman Aerospace | Moosup, CT | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| MIMaxam Initiation Systems | Sterling, CT | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| QCQuikrete - Connecticut Plant | Moosup, CT | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| TCTilcon Connecticut | Thompson (north Grosvenordale), CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TCTilcon Connecticut INC. - Plainfield (wauregan) | Wauregan, CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| URUnion Roto-graving, INC. | Putnam, CT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| UU.s.cosmetics | Killingly (dayville), CT | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| ACAmerican Country Foods, Inc. | Plainfield, CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BWBoudreau's Welding Co., INC. | Dayville, CT | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| CCC C J Green Recycling LLC | Voluntown, CT | Wood Product Manufacturing321999 | — | ◐ LIKELY ACTIVE |
| CRConnecticut Rubber Molding CORP. | Danielson, CT | Plastics and Rubber Products Manufacturing326291 | — | ◐ LIKELY ACTIVE |
| CCCRM Co., LLC | Plainfield, CT | Plastics and Rubber Products Manufacturing326299 | 20–99 | ◐ LIKELY ACTIVE |
| DNDetotec North America, INC | Sterling, CT | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
| DPDevon Point Farm | Woodstock, CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| E2Eastford-CT - 224 | Eastford, CT | Wood Product Manufacturing321920 | 20–99 | ◐ LIKELY ACTIVE |
| ELE.r.w., LLC | Putnam, CT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| GRGreene Rubber Company | Danielson, CT | Plastics and Rubber Products Manufacturing326291 | 100–499 | ◐ LIKELY ACTIVE |
| GPGriswold Products LLC | Moosup, CT | Chemical Manufacturing325212 | 20–99 | ◐ LIKELY ACTIVE |
| IPInternational Paper | Putnam, CT | Paper Manufacturing322211 | 100–499 | ◐ LIKELY ACTIVE |
| ITIvanhoe Tool & Die Company, Inc. | Thompson, CT | Machinery Manufacturing333511 | 20–99 | ◐ LIKELY ACTIVE |
| JFJeffco Foam Woodstock | Woodstock, CT | Furniture and Related Product Manufacturing337910 | 100–499 | ◐ LIKELY ACTIVE |
| KDKing, David W | Hampton, CT | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| LCLoos & Co., Inc. Pomfret | Pomfret Center, CT | Primary Metal Manufacturing331222 | 100–499 | ◐ LIKELY ACTIVE |
| MAMiyoshi America | Dayville, CT | Chemical Manufacturing325620 | 20–99 | ◐ LIKELY ACTIVE |
| NPNc Precision LLC | Putnam, CT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| NENew England Plasma Development Corporation | Putnam, CT | Fabricated Metal Product Manufacturing332812 | 20–99 | ◐ LIKELY ACTIVE |
| NTNuma Tool Company | Thompson, CT | Machinery Manufacturing333131 | 20–99 | ◐ LIKELY ACTIVE |
Nutmeg Container Thompson | Thompson, CT | Wood Product Manufacturing321920 | 20–99 | ◐ LIKELY ACTIVE |
| PPPPC Putnam | Putnam, CT | Electrical Equipment, Appliance & Component Manufacturing335921 | 20–99 | ◐ LIKELY ACTIVE |
| PCPutnam, CT - A343 | Putnam, CT | Plastics and Rubber Products Manufacturing326140 | 20–99 | ◐ LIKELY ACTIVE |
| QCQuiet Corner Winery | Hampton, CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RLRol-Vac LP | Dayville, CT | Plastics and Rubber Products Manufacturing326112 | 20–99 | ◐ LIKELY ACTIVE |
| SSSynnott Systems, INC | Plainfield, CT | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| TBTaylor Brooke Winery | Woodstock, CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TCThe Colt's Plastics Company, Inc. | Dayville, CT | Plastics and Rubber Products Manufacturing326199 | 20–99 | ◐ LIKELY ACTIVE |
| TPThompson Public Schools | North Grosvenordale, CT | Furniture and Related Product Manufacturing337127 | 100–499 | ◐ LIKELY ACTIVE |
| WFWatercure Farm | Pomfret Center, CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WHWestford Hill Distillers, LLC | Ashford, CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WWWheeler Winery LLC | Hampton, CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WLWhitcraft LLC DBA Pursuit Aerospace | Eastford, CT, CT | Transportation Equipment Manufacturing336412 | 100–499 | ◐ LIKELY ACTIVE |
| WSWoodbury Supply Company Inc - Dayville | Dayville, CT | Wood Product Manufacturing321911 | 1–19 | ◐ LIKELY ACTIVE |
| CCCentral Construction Industries, L.l.c. | Putnam, CT | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| ACAmtec Corporation | Plainfield, CT | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
Austin Powder Company | Sterling, CT | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| BHBear Hands Brewing Company, Inc. | Danielson, CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BHBear Hands Brewing Company, Inc. | Putnam, CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |