| CCCape Cod Coffee CO | Mashpee | MA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CCCape Cod Potato Chips | Hyannis | MA | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| CSCape Seafoods INC | Gloucester | MA | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| CCCapitol Circuits | Boston | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CACaps Auto Wrecking CORP | Lynn | MA | Plastics and Rubber Products Manufacturing326212 | — | ◇ UNVERIFIED |
| CCCarbon Composites INC | Leominster | MA | Electrical Equipment, Appliance & Component Manufacturing335991 | — | ◇ UNVERIFIED |
| CFCargill Flour Milling | Ayer | MA | Food Manufacturing311211 | — | ◇ UNVERIFIED |
| CGCarlo Gavazzi Electronic Packaging | Brockton | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CDCascades Diamond | Palmer | MA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| CACase Assembly Solutions Incorporated | South Easton | MA | Computer and Electronic Product Manufacturing334418 | 20-99 | ◇ UNVERIFIED |
| CHCastrol Heavy Duty Lubricants | Worcester | MA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| CICastronics Incorporated | Medway | MA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| CWCcnne Waltham | Waltham | MA | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| CRC&c Realty Carrier | Winchendon | MA | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| CCCenturylink Communications LLC | Boston | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CLCersosimo Lumber CO INC | Hardwick | MA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| CJCf Jameson | Haverhill | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CCCgi Circuits | Taunton | MA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| CLChampagne Lafayette Communications INC | Natick | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| CCChamplain Cable Berkshire Electric Div | Northampton (leeds) | MA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| CLChanning L Bete Company | Deerfield | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| CFCharlette Foundry | Blackstone | MA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| CChartpak | Northampton | MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| CCChase Coating and Laminating | Randolph | MA | Textile Mills313320 | — | ◇ UNVERIFIED |
| CCChase Coating & Laminating | Oxford | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| CPChase Precast Div of Oldcastle | North Brookfield | MA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CSChase & Sons INC | Randolph, Town of | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CFChatham Furniture Reproductions INC | Amesbury | MA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| CCChelsea Clock Company | Chelsea | MA | Computer and Electronic Product Manufacturing334518 | — | ◇ UNVERIFIED |
| CDChelsea Drum Company | Franklin | MA | Fabricated Metal Product Manufacturing332431 | — | ◇ UNVERIFIED |
| CCChemdesign CORP | Fitchburg | MA | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| CRCheney R H INC | Attleboro | MA | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| CUChep USA Norwood | Norwood | MA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| CCChicopee Concrete Services INC Chicopee | Chicopee | MA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CIChildlife INC | Holliston | MA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| CGChoice Graphics | Rowley | MA | Printing and Related Support Activities323111 | 1-19 | ◇ UNVERIFIED |
| CDChomerics Division | Woburn | MA | Miscellaneous Manufacturing339991 | — | ◇ UNVERIFIED |
| CCChurchill Coatings | Auburn | MA | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| CCChurchill Coatings | Palmer | MA | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| CMCincinnati Milacron-heald CORP | Worcester | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CFCircle Finishing INC | Newburyport | MA | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| CBCircuit Board Express | Haverhill | MA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| CSCisco Systems INC | Boxborough | MA | Computer and Electronic Product Manufacturing334112 | — | ◇ UNVERIFIED |
| CCC&k Components | Newton | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| CFClaremont Flock | Leominster | MA | Textile Mills313310 | — | ◇ UNVERIFIED |
| CCClark Cutler Mcdermott | Franklin | MA | Textile Mills313320 | — | ◇ UNVERIFIED |
| CFClassic Furniture | Franklin | MA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| CHClean Harbors Technical Services - North Andover Facility | North Andover | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| CLClearplas LLC | Leominster | MA | Miscellaneous Manufacturing339115 | — | ◇ UNVERIFIED |
| CFClemente Fane Concrete CORP | Pittsfield | MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
