Hyperfine Operations, INC | Guilford | CT | Computer and Electronic Product Manufacturing334510 | — | ● ACTIVE |
| IEImperial Electronic Assembly, INC. | Brookfield | CT | Computer and Electronic Product Manufacturing334418 | 100-499 | ● ACTIVE |
Industrial Heater CORP | Cheshire | CT | Fabricated Metal Product Manufacturing332322 | 20-99 | ● ACTIVE |
Infini-d Alchemy, INC. | Brookfield | CT | Fabricated Metal Product Manufacturing332813 | 1-19 | ● ACTIVE |
Inline Plastics Inc. (Connecticut) | Shelton | CT | Plastics and Rubber Products Manufacturing326113 | 100-499 | ● ACTIVE |
Integra-cast, LLC. | New Britain | CT | Primary Metal Manufacturing331524 | 1-19 | ● ACTIVE |
Integrated Illumination Systems INC | Morris | CT | Electrical Equipment, Appliance & Component Manufacturing335122 | 100-499 | ● ACTIVE |
| IMIntegrity Mfg., LLC | Farmington | CT | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
International Cordage East, Limited | Colchester | CT | Textile Product Mills314994 | 100-499 | ● ACTIVE |
Intrasonics, INC. | Thomaston | CT | Computer and Electronic Product Manufacturing334419 | 1-19 | ● ACTIVE |
| ITIvanhoe Tool & Die Company, Inc. | Thompson | CT | Machinery Manufacturing333511 | 20-99 | ● ACTIVE |
| IBIvy Biomedical Systems, INC. | Branford | CT | Computer and Electronic Product Manufacturing334510 | 20-99 | ● ACTIVE |
Jammar Mfg. CO. INC. | Niantic | CT | Miscellaneous Manufacturing339920 | 1-19 | ● ACTIVE |
Jarvis Airfoil INC. | Portland | CT | Transportation Equipment Manufacturing336412 | 20-99 | ● ACTIVE |
| JPJarvis Products Corporation | Middletown | CT | Machinery Manufacturing333241 | 1-19 | ● ACTIVE |
| JPJenray Products | Brookfield | CT | Chemical Manufacturing325612 | 20-99 | ● ACTIVE |
| JIJensen Industries INC. | North Haven | CT | Miscellaneous Manufacturing339114 | 20-99 | ● ACTIVE |
| JLJeskey, LLC | North Haven | CT | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Jet Process CORP | Wallingford | CT | Computer and Electronic Product Manufacturing334413 | 1-19 | ● ACTIVE |
| JTJ.f.d. Tube & Coil Products, INC | Hamden | CT | Machinery Manufacturing333994 | 20-99 | ● ACTIVE |
| JJJ. Joiners, LLC | Hamden | CT | Wood Product Manufacturing321911 | 1-19 | ● ACTIVE |
| JMJohn M. Dean Company | Putnam | CT | Fabricated Metal Product Manufacturing332618 | 1-19 | ● ACTIVE |
| JLJonal Laboratories INC | Meriden | CT | Plastics and Rubber Products Manufacturing326299 | 20-99 | ● ACTIVE |
| JMJornik Manufacturing Acquisitions | Stamford | CT | Miscellaneous Manufacturing339999 | 100-499 | ● ACTIVE |
Joval Machine CO INC | Yalesville | CT | Transportation Equipment Manufacturing336412 | — | ● ACTIVE |
J. R. Merritt Controls, INC. | Stratford | CT | Machinery Manufacturing333923 | 20-99 | ● ACTIVE |
J. Steele Services LLC | Mystic | CT | Miscellaneous Manufacturing339999 | 1-19 | ● ACTIVE |
| JDJuniper Design Group Inc. | Southignton | CT | Electrical Equipment, Appliance & Component Manufacturing335122 | 20-99 | ● ACTIVE |
| JPJ.v. Precision Machine CO. | Seymour | CT | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
K4 Machining LLC | Waterbury | CT | Fabricated Metal Product Manufacturing332710 | 1-19 | ● ACTIVE |
Kaman CORP | Bloomfield | CT | Transportation Equipment Manufacturing336413 | 500+ | ● ACTIVE |
Kaman Measuring & Memory, LLC | New Britain | CT | Computer and Electronic Product Manufacturing334112 | — | ● ACTIVE |
Kamatics Corporation | Bloomfield | CT | Fabricated Metal Product Manufacturing332721 | — | ● ACTIVE |
Kammetal INC. | Naugatuck | CT | Fabricated Metal Product Manufacturing332999 | 1-19 | ● ACTIVE |
| KCKanthal Corporation | Bethel | CT | Primary Metal Manufacturing331221 | 20-99 | ● ACTIVE |
Kell-strom Tool International, INC. | Wethersfield | CT | Fabricated Metal Product Manufacturing332999 | 20-99 | ● ACTIVE |
| KLKenneth Lynch & Sons, Incorporated | Oxford | CT | Nonmetallic Mineral Product Manufacturing327390 | — | ● ACTIVE |
| KGKeno Graphic Services, Inc. | Shelton | CT | Printing and Related Support Activities323111 | 20-99 | ● ACTIVE |
Kenyon International INC. | Clinton | CT | Electrical Equipment, Appliance & Component Manufacturing335210 | 20-99 | ● ACTIVE |
Kenyon Laboratories, LLC | Higganum | CT | Miscellaneous Manufacturing339999 | — | ● ACTIVE |
| KCKimberly-clark CORP | New Milford | CT | Paper Manufacturing322120 | — | ● ACTIVE |
| KIKimchuk, Incorporated | Danbury | CT | Computer and Electronic Product Manufacturing334418 | 20-99 | ● ACTIVE |
Kimtron, INC. | Oxford | CT | Computer and Electronic Product Manufacturing334517 | 1-19 | ● ACTIVE |
| KIKing Industries, INC. | Norwalk | CT | Chemical Manufacturing325199 | 100-499 | ● ACTIVE |
Kochek Company, LLC | Putnam | CT | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
| KKKoster Keunen | Watertown | CT | Chemical Manufacturing325612 | 20-99 | ● ACTIVE |
Kub Technologies INC. | Stratford | CT | Computer and Electronic Product Manufacturing334517 | — | ● ACTIVE |
| LILaticrete Int'l INC | Bethany | CT | Chemical Manufacturing325510 | 500+ | ● ACTIVE |
| LWLaurel Wire Company Inc. | Plainville | CT | Fabricated Metal Product Manufacturing332618 | 1-19 | ● ACTIVE |
Lavatec Laundry Technology INC. | Beacon Falls | CT | Machinery Manufacturing333310 | 20-99 | ● ACTIVE |