 Mack Prototype, INC | Gardner | MA | Plastics and Rubber Products Manufacturing326199 | — | ● ACTIVE |
 Precision Optics Corporation INC | Gardner | MA | Machinery Manufacturing333310 | — | ● ACTIVE |
 Advanced Cable Ties INC | Gardner | MA | Plastics and Rubber Products Manufacturing326199 | — | ● ACTIVE |
| DCDennecrepe Corporation | Gardner | MA | Paper Manufacturing322299 | 20-99 | ◐ LIKELY ACTIVE |
| NPNe Peptide LLC Aka Vivitide | Gardner | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| AJAdolph Jandris & Sons INC | Gardner | MA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| GFGarlock Flexibles Converting | Gardner | MA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| RLRoofblok Limited | Gardner | MA | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| SPSpecialized Paper Converting | Gardner | MA | Paper Manufacturing322299 | 20-99 | ◐ LIKELY ACTIVE |
| SCStandard Chair of Gardner | Gardner | MA | Furniture and Related Product Manufacturing337121 | 20-99 | ◐ LIKELY ACTIVE |
| NENew England Wooden Ware | Gardner | MA | Paper Manufacturing322211 | — | ◐ LIKELY ACTIVE |
| AWAnderson Woodturning | Gardner | MA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| AWAndreu World America, LLC | Gardner | MA | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| CBConant Ball CO | Gardner | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CHCountry Home Furniture | Gardner | MA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| CFC&w Fabricators | Gardner | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| DGData Guide Cable CORP | Gardner | MA | Primary Metal Manufacturing331421 | — | ◇ UNVERIFIED |
| FLFw Lombard CO | Gardner | MA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| GPGarlock Printing & Convertin | Gardner | MA | Paper Manufacturing322232 | — | ◇ UNVERIFIED |
| HOHartshorns of Gardner | Gardner | MA | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| KEKirk Eastern | Gardner | MA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| NSNichols & Stone CO | Gardner | MA | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| RCRalph Curcio CO | Gardner | MA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| SFSaloom Furniture | Gardner | MA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| CCChair City Meats Inc. | Gardner | MA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| FMFirst Mate Printing & Converting | Gardner | MA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| GFGarlock Flexibles | Gardner | MA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| FLFine Line Graphics | Gardner | MA | Printing and Related Support Activities323120 | — | ◇ UNVERIFIED |
| HAHarvey Apotheker Dmd | Gardner | MA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| H1H&r 1871 Incorporate | Gardner | MA | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| ISIdeal Sign Company | Gardner | MA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| JMJohn M Dubey | Gardner | MA | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| WEWoods Equipment CO | Gardner | MA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
