| FPFairfield Processing CORP | Danbury | CT | Miscellaneous Manufacturing339999 | — | ◐ LIKELY ACTIVE |
| FSFairfield Steel Works LLC | Shelton | CT | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| FCFastenal Company | Wallingford | CT | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| FRFluoropolymer Resources Inc. | Windham | CT | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| FFFocus Fabrication, LLC | Woodstock | CT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| FSFries Spinning & Stamping, Incorporated | Wallingford | CT | Fabricated Metal Product Manufacturing332119 | — | ◐ LIKELY ACTIVE |
Fuelcell Energy INC | Danbury | CT | Electrical Equipment, Appliance & Component Manufacturing335999 | 100-499 | ◐ LIKELY ACTIVE |
| GOGarden of Light, INC. | East Hartford | CT | Food Manufacturing311230 | 500+ | ◐ LIKELY ACTIVE |
| GMGirardin Moulding, INC | Windsor Locks | CT | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| GCGiuliana Cookery LLC | New Haven | CT | Food Manufacturing311520 | — | ◐ LIKELY ACTIVE |
| GTGlobal Turbine Component Technologies, LLC | South Windsor | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| GEGoodrich Electro-optical Systems | Danbury | CT | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| GBGrand Banks Specialty Food, LLC | Naugatuck | CT | Food Manufacturing311612 | 1-19 | ◐ LIKELY ACTIVE |
| GMGreer Manufacturing, INC. | Prospect | CT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| HFHalf Full Brewery, INC. | Stamford | CT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| HWHartford West Indian Bakery, Inc. | Hartford | CT | Food Manufacturing311612 | 20-99 | ◐ LIKELY ACTIVE |
| HPHigh Precision INC. | Hamden | CT | Miscellaneous Manufacturing339999 | — | ◐ LIKELY ACTIVE |
| HVHopkins Vineyard | Warren | CT | Beverage and Tobacco Product Manufacturing312130 | 1-19 | ◐ LIKELY ACTIVE |
| HMHot Monkey Nuts LLC | Killingworth | CT | Food Manufacturing311911 | — | ◐ LIKELY ACTIVE |
| HHHp Hood Ice Cream Plant | Suffield | CT | Food Manufacturing311520 | — | ◐ LIKELY ACTIVE |
Hydro Honing Laboratories | East Hartford | CT | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| IMIndependent Metalworx, Inc. | Ansonia | CT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| IGItw Graphics (formerly Pro/mark Corporation) | Manchester | CT | Printing and Related Support Activities323112 | — | ◐ LIKELY ACTIVE |
| ISITW Seats - Lakeville | Lakeville | CT | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| ISITW ShineMark Bloomfield | Bloomfield | CT | Paper Manufacturing322220 | 20-99 | ◐ LIKELY ACTIVE |
| JMJared Manufacturing CO. INC. | Norwalk | CT | Fabricated Metal Product Manufacturing332313 | — | ◐ LIKELY ACTIVE |
| JMJC Mectec, LLC | Stratford | CT | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| JGJmf Group, LLC | East Windsor | CT | Food Manufacturing311999 | — | ◐ LIKELY ACTIVE |
| JPJ.m. Products, INC. | Oxford | CT | Machinery Manufacturing333517 | — | ◐ LIKELY ACTIVE |
| JBJust Buttons, LLC | Branford | CT | Miscellaneous Manufacturing339993 | — | ◐ LIKELY ACTIVE |
| KAKaman Aerospace Corporation | Bloomfield | CT | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| KAKaman Aerospace Helicopters Div | Bloomfield | CT | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| KIKing Industries | Waterbury | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| KKK & K Black Oxide | New Britain | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| LMLa Molisana Sausage Company LLC | Waterbury | CT | Food Manufacturing311612 | 1-19 | ◐ LIKELY ACTIVE |
| LOLiberty Oil & Propane Equipment Co., Inc. | East Hartford | CT | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| LTLogo Thread, LLC | Newington | CT | Textile Product Mills314999 | — | ◐ LIKELY ACTIVE |
| MSMacdermid Specialty Chemical Services | Waterbury | CT | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| MPManchester Packing, INC. | Vernon | CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MSMaugle Sierra Vineyards | Ledyard | CT | Beverage and Tobacco Product Manufacturing312130 | 1-19 | ◐ LIKELY ACTIVE |
| MAMax Analytical Instruments | East Windsor | CT | Computer and Electronic Product Manufacturing334513 | 1-19 | ◐ LIKELY ACTIVE |
| MCM Cubed Technology Inc | Monroe | CT | Machinery Manufacturing333515 | 100-499 | ◐ LIKELY ACTIVE |
| MFMetal Finishing Technologies LLC | Forestville | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| MWMiami Wabash Paper, LLC | Norwalk | CT | Paper Manufacturing322121 | — | ◐ LIKELY ACTIVE |
| MCMicrofab Company LLC | Oxford | CT | Fabricated Metal Product Manufacturing332510 | — | ◐ LIKELY ACTIVE |
| MLMilbar Labs, INC. | East Haven | CT | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| MCMilford Concrete Products | Milford | CT | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| MGMilton & Goose LLC | Stamford | CT | Wood Product Manufacturing321999 | — | ◐ LIKELY ACTIVE |
| NINeoperl INC | Waterbury | CT | Plastics and Rubber Products Manufacturing326191 | 20-99 | ◐ LIKELY ACTIVE |
| NENesci Enterprises INC | East Hampton | CT | Fabricated Metal Product Manufacturing332116 | — | ◐ LIKELY ACTIVE |