| HRHampford Research | Stratford | CT | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| HAHanwha Aerospace USA | Glastonbury | CT | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| HBH. Barber & Sons, INC. | Naugatuck | CT | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| HSHighway Safety CORP / Ct Galvanizing | Glastonbury | CT | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| HVHoya Vision Care | South Windsor | CT | Miscellaneous Manufacturing339115 | 20-99 | ◐ LIKELY ACTIVE |
| HBHummel Brothers, INC | New Haven | CT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| JPJarvis Products Corporation | Middletown | CT | Machinery Manufacturing333241 | 100-499 | ◐ LIKELY ACTIVE |
| KKKoster Keunen | Watertown | CT | Chemical Manufacturing325612 | 20-99 | ◐ LIKELY ACTIVE |
| LSLab Security Systems CORP | Bristol | CT | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
Lavatec Laundry Technology INC. | Beacon Falls | CT | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| LILeed-himmel Industries, INC. | Hamden | CT | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
| LGLegere Group, LTD | Avon | CT | Furniture and Related Product Manufacturing337110 | 100-499 | ◐ LIKELY ACTIVE |
L & P Gate Company INC | Hartford | CT | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
Maco Machinery Co., INC. | North Branford | CT | Machinery Manufacturing333612 | — | ◐ LIKELY ACTIVE |
Marketing Solutions Unlimited, LLC | West Hartford | CT | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| MTMetals Testing CO | South Windsor | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| MTMorgan Truck Body LLC - Mct | Moosup | CT | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| NINickson Industries | Plainville | CT | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| NCNorwalk CO. , INC. | Norwalk | CT | Printing and Related Support Activities323120 | 1-19 | ◐ LIKELY ACTIVE |
| NTNoujaim Tool CO. INC. | Waterbury | CT | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Nufern | East Granby | CT | Electrical Equipment, Appliance & Component Manufacturing335921 | — | ◐ LIKELY ACTIVE |
| OGO & G Concrete Plant | Bridgeport | CT | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| OGO & G Industries | Danbury | CT | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| OGO & G Industries, INC | Stamford | CT | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| OIO&g Industries INC | Waterbury | CT | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| PCPalco Connector, INC | Naugatuck | CT | Computer and Electronic Product Manufacturing334417 | 20-99 | ◐ LIKELY ACTIVE |
| PCPall Corporation | Putnam | CT | Textile Product Mills314999 | 20-99 | ◐ LIKELY ACTIVE |
| PEPape Electroplating Company LLC. | New Britain | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| PPPharmco Products | Brookfield | CT | Chemical Manufacturing325193 | — | ◐ LIKELY ACTIVE |
| PMPlymouth Meats LLC | Terryville | CT | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| PIPorce-len, INC | Hamden | CT | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| PWPratt & Whitney | Middletown | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| PWPratt & Whitney, Division of Rtx CORP | East Hartford | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
Ren Investment Group, INC | Suffield | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| RSResin Solutions, LLC | Stratford | CT | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| RTRfs Technologies, INC. | Meriden | CT | Computer and Electronic Product Manufacturing334220 | 100-499 | ◐ LIKELY ACTIVE |
Romco Contractors, INC. | Bloomfield | CT | Fabricated Metal Product Manufacturing332116 | — | ◐ LIKELY ACTIVE |
| SDSaputo Dairy Foods USA - Newington | Newington | CT | Food Manufacturing311511 | — | ◐ LIKELY ACTIVE |
| SASealed Air CORP - Danbury | Danbury | CT | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| SSSeymour Sheridan INC | Monroe | CT | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| SShelterlogic | Watertown | CT | Textile Product Mills314910 | 100-499 | ◐ LIKELY ACTIVE |
| SSShurtape Specialty Coating, LLC | New Hartford | CT | Paper Manufacturing322220 | 20-99 | ◐ LIKELY ACTIVE |
| SASikorsky Aircraft Headquarters | Stratford | CT | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| TCThe Carby Corporation | Watertown | CT | Miscellaneous Manufacturing339993 | 20-99 | ◐ LIKELY ACTIVE |
| TSThe Superior Plating Company | Southport | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| TATriumph Actuation Systems | Windsor | CT | Machinery Manufacturing333995 | 100-499 | ◐ LIKELY ACTIVE |
| TPTtm Printed Circuit Group, INC. | Stafford | CT | Computer and Electronic Product Manufacturing334412 | — | ◐ LIKELY ACTIVE |
| USUnified Sports, INC | Waterford | CT | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| USUnimetal Surface Finishing, LLC | Thomaston | CT | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| UEUnison Engine Components | Manchester | CT | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |