| MBMass. Bay Brewing Company, Inc. | Boston | MA | Beverage and Tobacco Product Manufacturing312120 | 100-499 | ● ACTIVE |
| MNMaterion Newton INC | Newton | MA | Primary Metal Manufacturing331410 | 100-499 | ● ACTIVE |
| MPMaterion Precision Optics and Thin Film Coatings INC | Westford | MA | Machinery Manufacturing333310 | — | ● ACTIVE |
Metalogic Industries LLC | Southbridge | MA | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Metalor Technologies USA Corporation | North Attleboro | MA | Chemical Manufacturing325180 | — | ● ACTIVE |
Metal Processing Co., INC. | Tyngsboro | MA | Computer and Electronic Product Manufacturing334419 | — | ● ACTIVE |
Metamagnetics INC | Marlborough | MA | Computer and Electronic Product Manufacturing334419 | 20-99 | ● ACTIVE |
Micro Machine & Electronics, INC. | Leominster | MA | Fabricated Metal Product Manufacturing332710 | 1-19 | ● ACTIVE |
| MMMicro Magnetics, INC | Fall River | MA | Computer and Electronic Product Manufacturing334413 | 1-19 | ● ACTIVE |
Micropower Direct, LLC | South Easton | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | 1-19 | ● ACTIVE |
Middlesex General Industries, INC | Newburyport | MA | Machinery Manufacturing333922 | 1-19 | ● ACTIVE |
Mini-systems INC | Attleboro | MA | Computer and Electronic Product Manufacturing334415 | — | ● ACTIVE |
Mks INC. | Andover | MA | Machinery Manufacturing333242 | 500+ | ● ACTIVE |
Motion Technology, INC | Hudson | MA | Machinery Manufacturing333241 | 20-99 | ● ACTIVE |
| MSMouse Specifics INC | Framingham | MA | Computer and Electronic Product Manufacturing334510 | 1-19 | ● ACTIVE |
My Cousins Wine LLC | Harwich | MA | Beverage and Tobacco Product Manufacturing312130 | — | ● ACTIVE |
Myolex, INC. | Brookline | MA | Computer and Electronic Product Manufacturing334510 | 1-19 | ● ACTIVE |
Mystic Scenic Studios, INC. | Norwood | MA | Wood Product Manufacturing321999 | 20-99 | ● ACTIVE |
Nanoramic, INC. | Woburn | MA | Electrical Equipment, Appliance & Component Manufacturing335910 | 20-99 | ● ACTIVE |
| NCNational Coating | Rockland | MA | Textile Mills313320 | 20-99 | ● ACTIVE |
Netzsch Instruments North America, LLC | Burlington | MA | Computer and Electronic Product Manufacturing334516 | 20-99 | ● ACTIVE |
Neurent Medical INC | Braintree | MA | Miscellaneous Manufacturing339113 | 20-99 | ● ACTIVE |
| NBNew Balance Athletic Shoe | Lawrence | MA | Leather and Allied Product Manufacturing316210 | — | ● ACTIVE |
New England Trading Global INC | Pembroke | MA | Primary Metal Manufacturing331491 | 1-19 | ● ACTIVE |
Nextek, LLC | North Billerica | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | 1-19 | ● ACTIVE |
Nfi LLC | New Bedford | MA | Printing and Related Support Activities323111 | 100-499 | ● ACTIVE |
Niche, INC. | New Bedford | MA | Textile Product Mills314999 | 1-19 | ● ACTIVE |
Novolac Epoxy Technologies INC | Pocasset | MA | Chemical Manufacturing325510 | — | ● ACTIVE |
Nutri-systems Corporation | Turners Falls | MA | Textile Product Mills314910 | 1-19 | ● ACTIVE |
N-vision Optics, LLC | Needham | MA | Computer and Electronic Product Manufacturing334511 | 1-19 | ● ACTIVE |
| NMNxstage Medical, INC. | Lawrence | MA | Miscellaneous Manufacturing339112 | — | ● ACTIVE |
| OEOlympic Engineering Services, INC | Bradford | MA | Fabricated Metal Product Manufacturing332710 | 1-19 | ● ACTIVE |
| OIOnto Innovation INC | Wilmington | MA | Machinery Manufacturing333242 | — | ● ACTIVE |
| OSOnyx Specialty Papers, Inc. | South Lee | MA | Machinery Manufacturing333243 | 100-499 | ● ACTIVE |
Optical Sourcing Experts, INC. | Wilmington | MA | Computer and Electronic Product Manufacturing334419 | 1-19 | ● ACTIVE |
| OIOpticraft, INC. | Woburn | MA | Machinery Manufacturing333310 | — | ● ACTIVE |
Optikos, LLC | Wakefield | MA | Computer and Electronic Product Manufacturing334516 | — | ● ACTIVE |
Optima, INC | Shrewsbury | MA | Miscellaneous Manufacturing339940 | — | ● ACTIVE |
Optos, INC | Marlborough | MA | Miscellaneous Manufacturing339112 | 100-499 | ● ACTIVE |
Organic Plant Magic LLC | Marshfield | MA | Chemical Manufacturing325311 | 1-19 | ● ACTIVE |
Organomation Manufacturing INC | Berlin | MA | Computer and Electronic Product Manufacturing334516 | 1-19 | ● ACTIVE |
O. W. Landergren, INC | Pittsfield | MA | Fabricated Metal Product Manufacturing332322 | 20-99 | ● ACTIVE |
Parts Tool & Die, LLC | Agawam | MA | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Peak Scientific INC | Westford | MA | Computer and Electronic Product Manufacturing334516 | 20-99 | ● ACTIVE |
| PTPendar Technologies LLC | Cambridge | MA | Computer and Electronic Product Manufacturing334519 | 20-99 | ● ACTIVE |
Phoenix, INC | Seekonk | MA | Machinery Manufacturing333515 | 1-19 | ● ACTIVE |
Polar CORP. | Worcester | MA | Beverage and Tobacco Product Manufacturing312111 | 500+ | ● ACTIVE |
Poly6 Technologies, INC. | Burlington | MA | Nonmetallic Mineral Product Manufacturing327120 | 20-99 | ● ACTIVE |
Polycarbon Industries, INC | Devens | MA | Chemical Manufacturing325199 | — | ● ACTIVE |
Polymer Corporation | Palmer | MA | Plastics and Rubber Products Manufacturing326199 | — | ● ACTIVE |