| DPDs Precision Machine | Vernon Rockville | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DCDubois Chemicals, INC | Sterling | CT | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| DLDucduc, LLC | Torrington | CT | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| DDDuck Duck Goose Donuts LLC | Orange | CT | Food Manufacturing311813 | — | ◇ UNVERIFIED |
| DLDuctco, LLC | Bloomfield | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| DLDutch's LLC | Groton | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| DEDw Enterprise | Simsbury | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| DADwyer Aluminum Mast Company | North Branford | CT | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| DIDyco Industries | South Windsor | CT | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| DNDyno Nobel | Simsbury | CT | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| EIEagle Interiors Group, LLC | Brooklyn | CT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| EAE a Patten | Columbia | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| ELEasr LLC | New Canaan | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| ECEast Coast Kombucha Company LLC | Norwalk | CT | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| ECEast Coast Sheet Metal, LLC | Trumbull | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| ECEast Coast Sheet Metal, LLC | Litchfield | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| EDEastern Ducts LLC | Bozrah | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| ESEastern Steel Contracting, LLC | Hamden | CT | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
| ETEastern Tech Company | Milford | CT | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| ETEastern Tech LLC | Orange | CT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| EVECH Ventures LLC | Milford | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| EJE J Gaisser INC | Stamford | CT | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| EIElectrical Images L.L.C. | Southington | CT | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| EIEleterial Inc. | Bridgeport | CT | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| EIElite III Asphalt Services, LLC | Brookfield | CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| EBElizabeth's Bakery, LLC | Wallingford | CT | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| ESEndless Sweets Bakery LLC | Plantsville | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| EREra Replica Automobiles | New Britain | CT | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| EIErgotech, INC. | Danbury | CT | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| EBEscape Brands LLC | Cheshire | CT | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| EBEtherington Brothers | Bristol | CT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| EEEtter Engineering Company, INC. | Bristol | CT | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| ESEvening Sky Brewing Company LLC | Burlington | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| EIExperience in Design, INC. | West Haven | CT | Textile Mills313310 | — | ◇ UNVERIFIED |
| EEExpert Embroidery, LLC | Wallingford | CT | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| EDEyelet Design, INC | Waterbury | CT | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| ELEz4x4, LLC | Waterbury | CT | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| FFFabled Foods, INC. | Deep River | CT | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| FIFairchild Industires Inc. | Winchester | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| FCFairfield County Granite LLC | Bridgeport | CT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| FLFaria Limited, LLC | New London | CT | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| FFastsigns | Waterford | CT | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| FFF. F. Screw Products INC | Southington | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| FHFirst Heating & Cooling LLC | New Canaan | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| FIFishers Island Ferry | New London | CT | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| FSFjc Services LLC | Plymouth | CT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| FRFLH Realty | Newington | CT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| FSFlight Support, INC. | North Haven | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| FLFlo-tech, LLC | Middletown | CT | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| FPFlow Polymers INC | Stratford | CT | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
