| TCTilcon Connecticut INC. - Danbury | Danbury | CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TCTilcon Connnecticut INC | North Branford | CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TDTimbercraft Drawers | New Milford | CT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| TLTimbercraft LLC | New Milford | CT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| TSTimeless Stone Marble & Granite, INC | Danbury | CT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TATld Ace | Windsor | CT | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| TFTony's Flour Shop LLC | Cromwell | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| TCTorrington CO Standard Plant | Torrington | CT | Fabricated Metal Product Manufacturing332991 | — | ◇ UNVERIFIED |
| TBTranscend Beer Crafters, LLC | Southington | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| TFTrans Flex Packagers INC | Unionville | CT | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| TTrans-lux | Norwalk | CT | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| TPTrinity Paving | Newington | CT | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| TITriton Industries, INC. | Deep River | CT | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
 Ttm Technologies, INC. | Stafford Springs | CT | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| TPTurbotec Products INC. | Windsor | CT | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TTwr | Hartford | CT | Textile Mills313220 | — | ◇ UNVERIFIED |
| TETyco Electronics Waterbury | Waterbury | CT | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Goup-stafford Div | Staffordville | CT | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Group | Stafford Springs | CT | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Group Stafford Div | Stafford | CT | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| TTTyger Tool | Stratford | CT | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
 United Electric Controls Precision Sensors Divisions | Milford | CT | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| USUnited States Fire Arms Manufacturing | Hartford | CT | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| UCUniversal Component Corporation | Branford | CT | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| UIUretek INC | New Haven | CT | Textile Mills313320 | — | ◇ UNVERIFIED |
| UCU.s. Chutes Corporation | Bantam | CT | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| UOUsdol Osha | Plantsville | CT | Fabricated Metal Product Manufacturing332112 | — | ◇ UNVERIFIED |
| UDU.s. Dol/osha Bridgeport | Bridgeport | CT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| UDUS Dol Osha -bridgeport | Southbury | CT | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| UDUS Dol Osha Bridgeport | Wallingford | CT | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| UOUsdol Osha - Hartford Area Office | Berlin | CT | Machinery Manufacturing333298 | — | ◇ UNVERIFIED |
| UOUsdol Osha - Hartford Area Office | East Hartford | CT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| UOUsdol Osha - Hartford Area Office | Putnam | CT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| USU S Repeating Arms CO INC | New Haven | CT | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| UFUtc Fuel Cells L L C | South Windsor | CT | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| UCUtility Communications Inc | Hamden | CT | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| VEVacuum Engineering Services Co., INC. | East Windsor | CT | Machinery Manufacturing333994 | — | ◇ UNVERIFIED |
| VDValley Donuts, INC. | Canton | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| VCValspar CORP | Rocky Hill | CT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| VTVictor Tool Co., INC. | Meriden | CT | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| WAWallingford Aerospace Acquisition INC. | Wallingford | CT | Miscellaneous Manufacturing339991 | — | ◇ UNVERIFIED |
| WCWarren CORP | Stafford Springs | CT | Textile Mills313210 | — | ◇ UNVERIFIED |
| WCWaterbury Contract Eyelets & Stampings, INC. | Waterbury | CT | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| WRWaterbury Rolling Mills | Waterbury | CT | Primary Metal Manufacturing331411 | — | ◇ UNVERIFIED |
| WIWeld-all, INC. | Southington | CT | Computer and Electronic Product Manufacturing334512 | — | ◇ UNVERIFIED |
| WHWells Hollow Creamery LLC | Shelton | CT | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| WCWest - Conn Tool & Die, INC. | Stratford | CT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WIWestfalia, INC | Bristol | CT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
