| BOBakery On Maple, LLC | Bristol | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BRBall & Roller Bearing Co., LLC | New Milford | CT | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| BIBanner Industries -windsor | Windsor | CT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BABaobab Asset Management LLC | Greenwich | CT | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| BPBarn Properties, LLC | Old Saybrook | CT | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| BTBaron Technology, INC. | Monroe | CT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| BYBaron & Young Company, INC. | Bristol | CT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BHBear Hands Brewing Company, Inc. | Danielson | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BGBella Granite Designs, LLC | New Haven | CT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BHBerone Holdings LLC | Somers | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BLBessties LLC | Norwalk | CT | Food Manufacturing311821 | — | ◇ UNVERIFIED |
| BHBetter Half Brewing | Bristol | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BMB&f Model and Pattern, INC. | Milford | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BIBhs Industries, Limited | Wallingford | CT | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| BLBiopellet, LLC | Berlin | CT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| BLBirch LLC | Riverside | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BPBlackout Precision Machining LLC | Berlin | CT | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| BHBlue Horizon Realty, LLC | South Windsor | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BSBoardman Silversmith, INC. | Wallingford | CT | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| BBBonata Brakery LLC | Norwalk | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BDBootstrap Direct 1, Inc. | Southington | CT | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| BGBottling Group LLC | Brookfield | CT | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| BSBowman Signs LLC | Milford | CT | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| BBBranford Breverage Company, LLC | Branford | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BTBrewser Technologies | Stratford | CT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BCBrimatco Corporation | Branford | CT | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| BMBri Metal Works, INC. | Bridgeport | CT | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| BTBristol Tool and Die Company, INC. | Bristol | CT | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| BFBroadridge Financial Solutions, INC. | South Windsor | CT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| BWBroadstar Wind Systems, LP | Cheshire | CT | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| BWBucci Welding, LLC | Killingly | CT | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| BPBudget Printers & Embroiderers | Hartford | CT | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| BTBudget Trasmission Center | West Haven | CT | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| BIBuiltRight Industries LLC | New Milford | CT | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| BIBurnside Ice CO. | East Hartford | CT | Beverage and Tobacco Product Manufacturing312113 | — | ◇ UNVERIFIED |
| BMBushwick Metals INC | Bridgeport | CT | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
 Cable Management LLC | Meriden | CT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CICadenzia Innovations, INC. | Danbury | CT | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| CTCamerota Truck Parts | Enfield | CT | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| CCCaprine Creations LLC | Salem | CT | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CSCarbide Solutions LLC | Newington | CT | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| CLCardenas LLC | Ansonia | CT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| CRCarlon Rubber Products CO | Derby | CT | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
 Carpenter Technology Corporation | Bridgeport | CT | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| CBCarroll Bullets, INC. | Stafford Springs | CT | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| CCC & C Hydraulics, INC. | Milford | CT | Machinery Manufacturing333995 | — | ◇ UNVERIFIED |
| CPCell Pak | Bridgeport | CT | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| CLCellpro LLC | Bristol | CT | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| CCCentral Connecticut Tank Fabrication & Truck Repair, LLC | Meriden | CT | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| CWCentury Woodworking, INC. | Pleasant Valley | CT | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
