| LBLutco Bearings | Worcester, MA | Fabricated Metal Product Manufacturing332991 | 20–99 | ◐ LIKELY ACTIVE |
| MLMA048 Leominster Cutlery (Dixie) | Leominster, MA | Machinery Manufacturing333249 | 100–499 | ◐ LIKELY ACTIVE |
| MPMA Potato Chip Manufacturer, LLC | Fitchburg, MA | Food Manufacturing311919 | 20–99 | ◐ LIKELY ACTIVE |
| MBMass Bay Brewing Company, INC. | Worcester, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| MDMetrie Distribution - Boston | Northboro, MA | Wood Product Manufacturing321918 | 1–19 | ◐ LIKELY ACTIVE |
| MTMicrochip Technology Inc Westborough MA | Westborough, MA | Computer and Electronic Product Manufacturing334413 | 20–99 | ◐ LIKELY ACTIVE |
| MHMillbury Heat Treat Plant | Millbury, MA | Fabricated Metal Product Manufacturing332811 | 20–99 | ◐ LIKELY ACTIVE |
| MDModern Dispersions Inc | Leominster, MA | Chemical Manufacturing325991 | 20–99 | ◐ LIKELY ACTIVE |
| NMNelson Miller Group-Fitchburg MA | Fitchburg, MA | Computer and Electronic Product Manufacturing334111 | 20–99 | ◐ LIKELY ACTIVE |
| NNewCorr | Northborough, MA | Paper Manufacturing322211 | 20–99 | ◐ LIKELY ACTIVE |
| NENew England Fabricated Metals, Inc. | Leominster, MA | Fabricated Metal Product Manufacturing332322 | 20–99 | ◐ LIKELY ACTIVE |
| NENew England Wire Products Inc - Nashua St | Leominster, MA | Fabricated Metal Product Manufacturing332618 | 1–19 | ◐ LIKELY ACTIVE |
| NENew England Wire Products - Scott Dr | Leominster, MA | Fabricated Metal Product Manufacturing332618 | 20–99 | ◐ LIKELY ACTIVE |
| NDNitto Denko Avecia Inc, Milford | Milford, MA | Chemical Manufacturing325411 | 100–499 | ◐ LIKELY ACTIVE |
| NWNutty Wine Maker Winery | Oakham, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PCParker-hannifin Corporation | Devens, MA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| PNPasquale Nicolazzo | Oakham, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PSPhotonis Scientific, Inc. | Sturbridge, MA | Computer and Electronic Product Manufacturing334419 | 20–99 | ◐ LIKELY ACTIVE |
| P1Plant 1 | Gardner, MA | Electrical Equipment, Appliance & Component Manufacturing335929 | 20–99 | ◐ LIKELY ACTIVE |
| P2Polar 26 Southbridge St | Worcester, MA | Beverage and Tobacco Product Manufacturing312111 | 100–499 | ◐ LIKELY ACTIVE |
| P3Polar 30 Sword St | Auburn, MA | Beverage and Tobacco Product Manufacturing312111 | 20–99 | ◐ LIKELY ACTIVE |
| PSPolar Southbridge St | Worcester, MA | Beverage and Tobacco Product Manufacturing312111 | 100–499 | ◐ LIKELY ACTIVE |
| PWPolar Walcott St | Worcester, MA | Beverage and Tobacco Product Manufacturing312111 | 100–499 | ◐ LIKELY ACTIVE |
| PFPolyvinyl Films INC. | Sutton, MA | Plastics and Rubber Products Manufacturing326111 | 100–499 | ◐ LIKELY ACTIVE |
| PCPortance CORP. | Fitchburg, MA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| PVPortland Valve LLC | Warren, MA | Fabricated Metal Product Manufacturing332911 | — | ◐ LIKELY ACTIVE |
| RHRagged Hill, Inc. d/b/a Graves Concrete | East Templeton, MA | Nonmetallic Mineral Product Manufacturing327320 | 20–99 | ◐ LIKELY ACTIVE |
| RCRand-Whitney Container LLC, Agrand & Greenwood | Worcester, MA | Paper Manufacturing322211 | 100–499 | ◐ LIKELY ACTIVE |
| RARed Apple Farm | Phillipston, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RCRemotereality CORP | Westborough, MA | Computer and Electronic Product Manufacturing334310 | — | ◐ LIKELY ACTIVE |
| RBRentschler Biopharma Inc. | Milford, MA | Chemical Manufacturing325414 | 100–499 | ◐ LIKELY ACTIVE |
| RSRushford & Sons Brewhouse | Upton, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RSRushford & Sons Brewhouse, LLC | Upton, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SBSaint-Gobain Bonded Abrasives | Worcester, MA | Nonmetallic Mineral Product Manufacturing327910 | 100–499 | ◐ LIKELY ACTIVE |
| SCSaint-gobain Ceramics & Plastics, INC. | Worcester, MA | Nonmetallic Mineral Product Manufacturing327120 | — | ◐ LIKELY ACTIVE |
| SPSaint-Gobain PCR | Worcester, MA | Nonmetallic Mineral Product Manufacturing327120 | 100–499 | ◐ LIKELY ACTIVE |
| SGSanofi Genzyme | Northborough, MA | Chemical Manufacturing325412 | 100–499 | ◐ LIKELY ACTIVE |
| SPSeaman Paper Company of Massachusetts | Otter River, MA | Paper Manufacturing322121 | 20–99 | ◐ LIKELY ACTIVE |
| SCSEK Corporation / Ayotte | Spencer, MA | Nonmetallic Mineral Product Manufacturing327390 | 1–19 | ◐ LIKELY ACTIVE |
| SGShrewsbury Granite Works | Shrewsbury, MA | Nonmetallic Mineral Product Manufacturing327991 | 1–19 | ◐ LIKELY ACTIVE |
| SSSpatial Surgical LLC | Shrewsbury, MA | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| SRStill River Winery Wb, CORP. | West Brookfield, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SCStone Cow | Barre, MA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SSturbridge | Sturbridge, MA | Fabricated Metal Product Manufacturing332721 | 20–99 | ◐ LIKELY ACTIVE |
| TATeknor Apex Elastomers, Inc | Leominster, MA | Plastics and Rubber Products Manufacturing326299 | 20–99 | ◐ LIKELY ACTIVE |
| TWTesta Wine and Cider | West Brookfield, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TMThomas Martin | Templeton, MA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TPThomas Processing (div of IMA North America Inc) | Leominster, MA | Machinery Manufacturing333248 | 20–99 | ◐ LIKELY ACTIVE |
| TFTims Fabricators Inc | Fitchburg, MA | Fabricated Metal Product Manufacturing332323 | 20–99 | ◐ LIKELY ACTIVE |
| TSTrelleborg Sealing Solutions - Northborough | Northborough, MA | Plastics and Rubber Products Manufacturing326220 | 100–499 | ◐ LIKELY ACTIVE |