| CPCurtis Papers INC | Adams, MA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| ECElectronic Concepts INC | Lee, MA | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| EPExcelsior Printing | N Adams, MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| EPExcelsior Process & Engraving | North Adams, MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GCGeneral Cable CO | Williamstown, MA | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| GDGeneral Dynamics Advanced Info Systems | Pittsfield, MA | Fabricated Metal Product Manufacturing332995 | — | ◇ UNVERIFIED |
| GIGl&v Impco-jones | Pittsfield, MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| GUGl&v USA INC | Lenox, MA | Machinery Manufacturing333243 | — | ◇ UNVERIFIED |
| JEJfj Enterprises INC | Lee, MA | Plastics and Rubber Products Manufacturing326212 | — | ◇ UNVERIFIED |
| LCLane Construction CORP | Sheffield, MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LCLane Construction CORP | Pittsfield, MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LCLane Construction CORP | Adams, MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MGMacdermid Graphic Arts | Adams, Town of, MA | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| MGMacdermid Graphic Arts | Adams, MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MAModern Aluminum Anod | N Adams, MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MAModern Aluminum Anodizing | North Adams, MA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MLMra Laboratories INC | Adams, MA | Computer and Electronic Product Manufacturing334414 | — | ◇ UNVERIFIED |
| MLMra Laboratories INC | North Adams, MA | Computer and Electronic Product Manufacturing334414 | — | ◇ UNVERIFIED |
| NPNeenah Paper Fr LLC | Great Barrington, MA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| NTNeenah Technical Materials INC | Pittsfield, MA | Textile Mills313230 | — | ◇ UNVERIFIED |
| OSOld Stone Mill | Adams, MA | Paper Manufacturing322299 | — | ◇ UNVERIFIED |
| OLOraceutical LLC | Lee, MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PIPhotex Imaging Systems | Williamstown, MA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| PPPittsfield Plastics Engineering LLC | Pittsfield, MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RPRoyal Plating & Polishing INC | Pittsfield, MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SISabic Innovative Plastics | Pittsfield, MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SISabic Innovative Plastics | Pittsfield, MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SMSchweitzer Mauduit Greylock Mill (former) | Lee, MA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| SMSchweitzer Mauduit Niagara Mill (former) | Lee, MA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
Sinicon Plastics INC | Dalton, MA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| TETurboprop East INC | North Adams, MA | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| BCBerkshire Cider Project LLC | North Adams, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BPBerkshire Precision Tool, LLC | Pittsfield, MA | Machinery Manufacturing333515 | 20–99 | ◐ LIKELY ACTIVE |
ComSonics, Inc. (Shine Wire) | Adams, MA | Computer and Electronic Product Manufacturing334419 | 20–99 | ◐ LIKELY ACTIVE |
| CCCrane Currency | Dalton, MA | Paper Manufacturing322121 | 100–499 | ◐ LIKELY ACTIVE |
| CCCrustpz Corp. | Pittsfield, MA | — | — | ◐ LIKELY ACTIVE |
| FIFerguson Ian D | Great Barrington, MA | Machinery Manufacturing333517 | — | ◐ LIKELY ACTIVE |
| FForager | North Adams, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Pittsfield, MA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| GFGraham Farmhouse, LLC | West Stockbridge, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| HOHilltop Orchards | Richmond, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| HHmapfb1 | Pittsfield, MA | Computer and Electronic Product Manufacturing334511 | 500+ | ◐ LIKELY ACTIVE |
| HHmapfb2 | Pittsfield, MA | Computer and Electronic Product Manufacturing334511 | 100–499 | ◐ LIKELY ACTIVE |
| HHmapfb3 | Pittsfield, MA | Computer and Electronic Product Manufacturing334511 | 100–499 | ◐ LIKELY ACTIVE |
| HHmapfb4 | Pittsfield, MA | Computer and Electronic Product Manufacturing334511 | 100–499 | ◐ LIKELY ACTIVE |
| JLJonathan Lescarbeau | North Adams, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| LTLes Trois Emme | New Marlborough, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PCPittsfield Communications Systems INC | Pittsfield, MA | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| SBSilver Bear Distillery, LLC | Dalton, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SRS & R Pharmaceuticals LLC | Lenox, MA | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |