| OSOlympic Systems CORP | Winchester | MA | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| PSPacKage Steel Systems, Inc | Sutton | MA | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| PLPdl Laboratory, INC | Plymouth | MA | Miscellaneous Manufacturing339116 | 20-99 | ◐ LIKELY ACTIVE |
| PTPetes Tire Barns INC | Orange | MA | Plastics and Rubber Products Manufacturing326212 | 100-499 | ◐ LIKELY ACTIVE |
| PBPiantedosi Baking CO | Malden | MA | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
| PMPoly Metal Finishing INC | Springfield | MA | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| PProtectowire | Pembroke | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | 20-99 | ◐ LIKELY ACTIVE |
| QWQuirk Wire CO INC | West Brookfield | MA | Primary Metal Manufacturing331422 | 20-99 | ◐ LIKELY ACTIVE |
| RPRamsbottom Printing, INC. | Fall River | MA | Printing and Related Support Activities323110 | 20-99 | ◐ LIKELY ACTIVE |
| RMRec Manufacturing Corporation | Hopedale | MA | Chemical Manufacturing325211 | 1-19 | ◐ LIKELY ACTIVE |
| RCRevolution Composites, LLC | Norwood | MA | Electrical Equipment, Appliance & Component Manufacturing335991 | 1-19 | ◐ LIKELY ACTIVE |
| RIRexa INC | West Bridgewater | MA | Machinery Manufacturing333995 | 100-499 | ◐ LIKELY ACTIVE |
| RCRex Cut Products INC | Fall River | MA | Nonmetallic Mineral Product Manufacturing327910 | 20-99 | ◐ LIKELY ACTIVE |
| RRR. R. Leduc CORP. | Holyoke | MA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| RMRuland Manufacturing CO. INC | Marlborough | MA | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| SESamtan Engineering, LLC | Malden | MA | Fabricated Metal Product Manufacturing332111 | 20-99 | ◐ LIKELY ACTIVE |
| SMSeekonk Manufacturing Company, INC. | Seekonk | MA | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| SOSharkninja Operating, LLC | Needham | MA | Electrical Equipment, Appliance & Component Manufacturing335210 | 500+ | ◐ LIKELY ACTIVE |
| SMShawmut Metal Products INC | Swansea | MA | Primary Metal Manufacturing331111 | 20-99 | ◐ LIKELY ACTIVE |
| SPShield Packaging | Dudley | MA | Chemical Manufacturing325612 | 20-99 | ◐ LIKELY ACTIVE |
| SHSiemens Healthcare Diagnostics INC | Walpole | MA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| SISjogren Industries | Worcester | MA | Machinery Manufacturing333514 | 1-19 | ◐ LIKELY ACTIVE |
| SSSkyworks Solutions INC | Woburn | MA | Computer and Electronic Product Manufacturing334411 | 100-499 | ◐ LIKELY ACTIVE |
| SWSmith & Wesson INC | Springfield | MA | Leather and Allied Product Manufacturing316999 | 500+ | ◐ LIKELY ACTIVE |
| SLSolenis LLC | Chicopee | MA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| SMSpecialty Materials | Lowell | MA | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| SLSpectrum Lighting | Fall River | MA | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| SMSrc Medical INC. | Hanover | MA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SASteel Art Co., INC. | Norwood | MA | Miscellaneous Manufacturing339950 | 100-499 | ◐ LIKELY ACTIVE |
Stone Link Marble & Granite CORP | Worcester | MA | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◐ LIKELY ACTIVE |
| SISturtevant INC | Hanover | MA | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
Tabc Group, LLC | Seekonk | MA | Computer and Electronic Product Manufacturing334515 | 1-19 | ◐ LIKELY ACTIVE |
| TITechprint INC | Lawrence | MA | Printing and Related Support Activities323113 | 100-499 | ◐ LIKELY ACTIVE |
| TOTherapedic of New England - Brockton | Brockton | MA | Furniture and Related Product Manufacturing337910 | 20-99 | ◐ LIKELY ACTIVE |
Thorndike Corporation | East Bridgewater | MA | Computer and Electronic Product Manufacturing334419 | 1-19 | ◐ LIKELY ACTIVE |
| TPToner Plastics | East Longmeadow | MA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| THTree House Distillery | Charlton | MA | Beverage and Tobacco Product Manufacturing312140 | 100-499 | ◐ LIKELY ACTIVE |
| TPTrue Precision Industries, INC. | West Springfield | MA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| USUnion Specialties | Newburyport | MA | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| UUnistress | Pittsfield | MA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
United Electric Controls Company | Watertown | MA | Computer and Electronic Product Manufacturing334513 | 100-499 | ◐ LIKELY ACTIVE |
| VSValley Steel Stamp, INC. | Greenfield | MA | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| VTV&s Taunton Galvanizing LLC | Taunton | MA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| WBWachusett Brewing Company | Westminster | MA | Beverage and Tobacco Product Manufacturing312120 | 20-99 | ◐ LIKELY ACTIVE |
| WAWalter a Furman CO LLC | Fall River | MA | Wood Product Manufacturing321911 | 20-99 | ◐ LIKELY ACTIVE |
| WTWhitman Tool & Die | Whitman | MA | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| WEWorcester Envelope Company | Auburn | MA | Paper Manufacturing322230 | 100-499 | ◐ LIKELY ACTIVE |
| ACAbcrosby & Company INC | Ashburnham | MA | Furniture and Related Product Manufacturing337122 | 1-19 | ◐ LIKELY ACTIVE |
| AMAccurate Metal Finishing INC | Randolph | MA | Fabricated Metal Product Manufacturing332812 | 1-19 | ◐ LIKELY ACTIVE |
| ACAdvance Coatings Company | Westminster | MA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |