| CNCKS Naugatuck | Naugatuck | CT | Plastics and Rubber Products Manufacturing326160 | 100-499 | ◐ LIKELY ACTIVE |
| CDClarkWestern Dietrich Building Systems - Bristol, CT | Bristol | CT | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| CBClick Bond Watertown | Watertown | CT | Fabricated Metal Product Manufacturing332722 | 100-499 | ◐ LIKELY ACTIVE |
| CClinton | Clinton | CT | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| CSCo-Create - Stamford, CT | Stamford | CT | Electrical Equipment, Appliance & Component Manufacturing335210 | 20-99 | ◐ LIKELY ACTIVE |
| CICoherent, Inc - Bloomfield | Bloomfield | CT | Computer and Electronic Product Manufacturing334510 | 100-499 | ◐ LIKELY ACTIVE |
| CFConcrete Feliz LLC | Danielson | CT | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| CConnecticut | Guilford | CT | Fabricated Metal Product Manufacturing332618 | 1-19 | ◐ LIKELY ACTIVE |
| CConnecticut | Colchester | CT | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| CBConnecticut Branch | Middletown | CT | Food Manufacturing311520 | 1-19 | ◐ LIKELY ACTIVE |
| CVConnecticut Valley Distillers, LLC | Manchester | CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| CVConnecticut Valley Distillery, LLC | Ellington | CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| CVConnecticut Valley Winery, LLC | New Hartford | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CSConn Stone Supplies, INC | Milford | CT | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| CSCONN STONE SUPPLIES, INC - Stamford | Stamford | CT | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◐ LIKELY ACTIVE |
| CECoorsTek East Granby | East Granby | CT | Fabricated Metal Product Manufacturing332991 | 20-99 | ◐ LIKELY ACTIVE |
| CWCoppola Wine Enterprises, LLC | North Haven | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCCornwall Cider | West Cornwall | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCCRM Co., LLC | Plainfield | CT | Plastics and Rubber Products Manufacturing326299 | 20-99 | ◐ LIKELY ACTIVE |
| CWCrush Wine, LLC | Wallingford | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCt01-new-newtown | Newtown | CT | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| CHCt112 Haydon Kerk | Waterbury | CT | Computer and Electronic Product Manufacturing334513 | 100-499 | ◐ LIKELY ACTIVE |
| CZCt135 Zygo Corporation | Middlefield | CT | Machinery Manufacturing333314 | 100-499 | ◐ LIKELY ACTIVE |
| CACt194 Ametek Magnetrol Usa, LLC | Naugatuck | CT | Computer and Electronic Product Manufacturing334514 | 20-99 | ◐ LIKELY ACTIVE |
| CPCt227 Paragon Medical, INC. 1146 Barnum Ave | Bridgeport | CT | Miscellaneous Manufacturing339112 | 100-499 | ◐ LIKELY ACTIVE |
| CPCt228 Paragon Medical, INC. 1105 Barnum Ave | Bridgeport | CT | Miscellaneous Manufacturing339112 | 100-499 | ◐ LIKELY ACTIVE |
| CACt32 Ametek Smp Wallingford | Wallingford | CT | Primary Metal Manufacturing331491 | 20-99 | ◐ LIKELY ACTIVE |
| CCtang1-yucn | Groton | CT | Transportation Equipment Manufacturing336411 | 20-99 | ◐ LIKELY ACTIVE |
| CPCurtis Products LLC | Bristol | CT | Fabricated Metal Product Manufacturing332721 | 1-19 | ◐ LIKELY ACTIVE |
| DMDACRUZ Manufacturing, Inc. | Bristol | CT | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| DCD'Ambruoso Construction Company Inc | Oxford | CT | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| DCD'amico Construction Company, INC. | Plainville | CT | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| DLDanver LLC | Wallingford | CT | Furniture and Related Product Manufacturing337124 | 20-99 | ◐ LIKELY ACTIVE |
| DRDeep River Distillers LLC | Deep River | CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| DFDeercrest Farm, LLC | Glastonbury | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| DCDel Consulting LLC | Waterford | CT | Miscellaneous Manufacturing339999 | — | ◐ LIKELY ACTIVE |
| DPDevon Point Farm | Woodstock | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| DBDfa-gsd-new Britain Ct | New Britain | CT | Food Manufacturing311511 | 100-499 | ◐ LIKELY ACTIVE |
| DADiageo Americas Supply, INC. | Stamford | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| DVDigrazia Vineyards, LTD. | Brookfield | CT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| DADrt Aerospace LLC | Winsted | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| DADRT Aerospace- Winsted | Winsted | CT | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| DCDukane Connecticut | Wallingford | CT | Machinery Manufacturing333992 | 1-19 | ◐ LIKELY ACTIVE |
DVM Manufacturing, LLC - Naugatuck | Naugatuck | CT | Fabricated Metal Product Manufacturing332119 | 1-19 | ◐ LIKELY ACTIVE |
| DEDymotek - Ellington | Ellington | CT | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| DSDymotek - Somers | Somers | CT | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| E1ebmpapst 110 | Farmington | CT | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| EEcct | Bloomfield | CT | Plastics and Rubber Products Manufacturing326212 | 1-19 | ◐ LIKELY ACTIVE |
| EDEighth District Distilling Company | Manchester | CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| ELElectroformers, LLC | Danbury | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |