| TCTiteflex Corporation INC | Springfield, MA | Plastics and Rubber Products Manufacturing326220 | — | ◇ UNVERIFIED |
| TITova Industries Dba D&s Manufacturing | Southwick, MA | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| TPTurley Publications INC | Palmer, MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| UCUnifirst Corporation | Agawam, MA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| VPValentine Plating CO INC | West Springfield, MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| VPValley Plating Incorporated | Springfield, MA | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| WMWestern Mass Rendering CO INC | Southwick, MA | Food Manufacturing311613 | — | ◇ UNVERIFIED |
Westfield Electroplating CO | Westfield, MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| WGWestfield Grinding Wheel | Westfield, MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| WRWestfield Ready Mix INC | Westfield, MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WEWestvaco Envelope | Springfield, MA | Paper Manufacturing322232 | — | ◇ UNVERIFIED |
| WAWrap Arounds Incorporated | W Springfield, MA | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| ZCZero CORP Zero East Div | Monson, MA | Food Manufacturing311111 | — | ◇ UNVERIFIED |
| 11 | Ludlow, MA | Machinery Manufacturing333514 | 20–99 | ◐ LIKELY ACTIVE |
| ASAdaptas Solutions, LLC | Palmer, MA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| ADAel Distilleries INC. | Agawam, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| AFAmazon Foods, Inc. | Chicopee, MA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| ASAmerican Specialty Grinding | Chicopee, MA | Machinery Manufacturing333515 | 20–99 | ◐ LIKELY ACTIVE |
| AUApMar USA, inc. | Springfield, MA | Fabricated Metal Product Manufacturing332813 | 20–99 | ◐ LIKELY ACTIVE |
Apple Steel Rule Die Co., Inc. MA | Springfield, MA | Machinery Manufacturing333514 | 1–19 | ◐ LIKELY ACTIVE |
| AEArnold's & Eddies Foods Inc. | Chicopee, MA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BCBOSMP Contech Engineered Solutions LLC | Palmer, MA | Fabricated Metal Product Manufacturing332322 | 1–19 | ◐ LIKELY ACTIVE |
| BWBrimfield Winery & Cider Barn | Brimfield, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CChicopee | Chicopee, MA | Computer and Electronic Product Manufacturing334516 | 20–99 | ◐ LIKELY ACTIVE |
| C7Chicopee 711 | Chicopee, MA | Computer and Electronic Product Manufacturing334516 | 20–99 | ◐ LIKELY ACTIVE |
| CPChicopee Plant | Chicopee, MA | Nonmetallic Mineral Product Manufacturing327320 | 20–99 | ◐ LIKELY ACTIVE |
| CWChicopee Warehouse | Chicopee, MA | Beverage and Tobacco Product Manufacturing312111 | 20–99 | ◐ LIKELY ACTIVE |
Conklin Office Services, Inc. | Holyoke, MA | Furniture and Related Product Manufacturing337121 | 20–99 | ◐ LIKELY ACTIVE |
| CMCopper Moon Distillery | Springfield, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCCoquito Chukito | Holyoke, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| CPCorrosion Products & Equipment - West Springfield | West Springfield, MA | Machinery Manufacturing333914 | 1–19 | ◐ LIKELY ACTIVE |
| CPCorrugated Packaging Springfield MA S | Springfield, MA | Paper Manufacturing322211 | 20–99 | ◐ LIKELY ACTIVE |
| CICSW, Inc. | Ludlow, MA | Machinery Manufacturing333514 | 20–99 | ◐ LIKELY ACTIVE |
| CICSW Inc Ludlow | Ludlow, MA | Machinery Manufacturing333514 | 20–99 | ◐ LIKELY ACTIVE |
| DMDaggers Meadery LLC | Granville, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| DLDelight, LLC | Springfield, MA | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| DBDiana's Bakery | Agawam, MA | Food Manufacturing311813 | 100–499 | ◐ LIKELY ACTIVE |
| DLDion Label Printing, LLC. | Westfield, MA | Printing and Related Support Activities323111 | 20–99 | ◐ LIKELY ACTIVE |
| DFDoncasters Forgings of Springfield | Springfield, MA | Fabricated Metal Product Manufacturing332112 | 20–99 | ◐ LIKELY ACTIVE |
| ECEasthampton Cider Project | Three Rivers, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| EHEcho Hill Orchards& Winery, LLC | Monson, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| EHEcho Hill Orchards & Winery, LLC | Monson, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| EIEga Industrial Products, LLC | Springfield, MA | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| ETEthosEnergy TC, Inc. | Chicopee, MA | Fabricated Metal Product Manufacturing332999 | 20–99 | ◐ LIKELY ACTIVE |
| GHG & H Manufacturing, INC. | Westfield, MA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| GSGrassetti Sales Associates, INC. | Springfield, MA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| GMGregory Mfg., INC. | Holyoke, MA | — | — | ◐ LIKELY ACTIVE |
| GCGtb Cases CORP. | Palmer, MA | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| GWGulfstream Westfield | Westfield, MA | Transportation Equipment Manufacturing336411 | 100–499 | ◐ LIKELY ACTIVE |
| HPHayes Prosthetic INC | West Springfield, MA | Miscellaneous Manufacturing339113 | — | ◐ LIKELY ACTIVE |