| PTPara Tech Coating By Curtiss-wright CORP | Middletown | CT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PTPara Tech Coating, INC | Middletown | CT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PCPark City Truck Equipment, LLC | Bridgeport | CT | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| PHParker Hannifin | North Haven | CT | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PHParker Hannifin Corporation, Apbu Dodge Ave | North Haven | CT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PBPB Blast LLC | South Windsor | CT | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PFP&c Fence Company INC. | Bridgeport | CT | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| PMPci Medical, Incorporated | Deep River | CT | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| PIPenmar Industries, INC. | Stratford | CT | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| PBPepsi Beverages Company | Stratford | CT | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| PRPequonnock River Woodworking, CO | Bridgeport | CT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| PCPhillips-moldex Company | Putnam | CT | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PEPiela Electric, INC. | Preston | CT | Transportation Equipment Manufacturing336322 | — | ◇ UNVERIFIED |
| PLPinecroft Landscape & Paving | Hampton | CT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PBPitney Bowes INC | Stamford | CT | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| PBPitney Bowes INC (old Wheeler Drive Location) | Stamford | CT | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| PRPlatt & Read Corporation | Branford | CT | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| PEPmc Engineering, LLC | Danbury | CT | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| PWPratt & Whitney | Middletown | CT | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| PWPratt & Whitney Div Utc (willgoos Lab) | East Hartford | CT | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| PMPre-bilt Mfg LLC | Branford | CT | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
 Precision Engineering Laboratories | Branford | CT | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PTPrestige Tool Manufacturer, LLC | Milford | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PBPrimo Brands | Watertown | CT | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| PCPrinting Co., INC. | Hamden | CT | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PHProgressive Hydraulics Incorporated | Stratford | CT | Fabricated Metal Product Manufacturing332912 | — | ◇ UNVERIFIED |
| PIProliance International INC | Windsor | CT | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| PPPro-manufactured Products, INC. | Plainfield | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PPProrez Performance Resins and Coatings L | Rocky Hill | CT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PSProtein Sciences CORP | Meriden | CT | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| PIPti Investment CO. LLP | South Windsor | CT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PIPucuda, INC. | Deep River | CT | Textile Mills313210 | — | ◇ UNVERIFIED |
| PMPYC Manufacturing, LLC (PYC Realty LLC) | Berlin | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| QCQsr Corporation | Hartford | CT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
 Quad Graphics, INC. | Enfield | CT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| QAQuality Automatics | Watertown | CT | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| QDQuality Design & Manufacturing,llc | North Branford | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| QCQuikrete - Connecticut INC. | Wauregan | CT | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RCRand-whitney Containerboard LP | Montville | CT | Paper Manufacturing322219 | — | ◇ UNVERIFIED |
| RCRay-Jurgen Co., LLC | Bristol | CT | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
| RHRbc Heim Bearing Company | Fairfield | CT | Fabricated Metal Product Manufacturing332991 | — | ◇ UNVERIFIED |
| RPRbs Property Management Company, LLC | Norwich | CT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| RSRdc Sheet Metal Company, INC. | Bethany | CT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| RMR-D MFG., Inc. | Old Saybrook | CT | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
 Redco Audio, INC. | Stratford | CT | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| RBRedland Brick INC /kf Plant | South Windsor | CT | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| RRRed Rocket Merchandising CORP. Dba Old Glory | Old Saybrook | CT | Textile Mills313311 | — | ◇ UNVERIFIED |
| RTRed Thread Spaces, LLC | East Hartford | CT | Furniture and Related Product Manufacturing337214 | — | ◇ UNVERIFIED |
| RHRenewable Heat Products, LLC | Waterbury | CT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| RResearchtool | Guilford | CT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
