 Stellar Industries CORP | Millbury | MA | Computer and Electronic Product Manufacturing334413 | 20-99 | ● ACTIVE |
 Barrday Corporation | Millbury | MA | Textile Mills313320 | — | ● ACTIVE |
| LCLewcott Corporation | Millbury | MA | Textile Mills313320 | — | ◇ UNVERIFIED |
| UCUnited County Ind Dba County Heat Treat | Millbury | MA | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| SWSpicy Water Distillery | Millbury | MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| CMCesyl Mills | Millbury | MA | Textile Mills313210 | — | ◐ LIKELY ACTIVE |
| BSBay State Circuits | Millbury | MA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| CCameron | Millbury | MA | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
 Fiba Technologies INC | Millbury | MA | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| JMJen Manufacturing Incorporated | Millbury | MA | Miscellaneous Manufacturing339994 | — | ◇ UNVERIFIED |
| JHJ H Lynch & Sons Paving | Millbury | MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| NENensco (new England Newspaper Supply) | Millbury | MA | Paper Manufacturing322222 | — | ◇ UNVERIFIED |
| PLPolyclad Laminates | Millbury | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| STService Tire Truck Center | Millbury | MA | Plastics and Rubber Products Manufacturing326212 | — | ◇ UNVERIFIED |
| UUnisorb | Millbury | MA | Textile Product Mills314991 | — | ◇ UNVERIFIED |
| WGWyman Gordon Company | Millbury | MA | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| BCBarrday Composite Solutions | Millbury | MA | Textile Mills313320 | 20-99 | ◐ LIKELY ACTIVE |
| MHMillbury Heat Treat Plant | Millbury | MA | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| CMCrafco Milbury | Millbury | MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| DCDBA Creative Signworks | Millbury | MA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| ESExpert Staffing Hc, INC. | Millbury | MA | Textile Mills313249 | — | ◇ UNVERIFIED |
| MSMinuteman Spring LLC | Millbury | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| NNensco | Millbury | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WIWindle Industries | Millbury | MA | Textile Mills313210 | — | ◇ UNVERIFIED |
