| ICIndependent Concrete Pipe | Plainville | MA | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| INIndependent Nail Company | Taunton | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| IPIndependent Plating CO. INC. | Worcester | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ILInduspad LLC | Lawrence, City of | MA | Textile Mills313312 | — | ◇ UNVERIFIED |
| ICIndustrial Chromium | Holyoke | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ITInfinity Tapes LLC | Lawrencelawrence | MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| IFInnocor Foam Technologies Newburyport, LLC | Newburyport | MA | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| IFInnovative Fabrication INC | Lowell | MA | Fabricated Metal Product Manufacturing332999 | 1-19 | ◇ UNVERIFIED |
| ICInstron CORP | Norwood | MA | Computer and Electronic Product Manufacturing334514 | — | ◇ UNVERIFIED |
| ICInstron Corporation | Canton | MA | Computer and Electronic Product Manufacturing334514 | — | ◇ UNVERIFIED |
| IFIntel Fab 17 Semiconductor Manufacturing | Hudson | MA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| ITIntelicoat Technologies | South Hadley | MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| IGInteplast Group LTD. | Dighton | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| IFInterface Fabrics Group | Douglas | MA | Textile Mills313310 | — | ◇ UNVERIFIED |
| IPInternational Paper | Framingham | MA | Paper Manufacturing322215 | — | ◇ UNVERIFIED |
| ICInterpolymer CORP | Canton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ICInterstate Coffee Se | Easton | MA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| ICInterstate Container LLC | Lowell | MA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| IMIonic Materials | Woburn | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| IPItt Power Exelis Solutions INC | West Springfield | MA | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| IPItw Polymers Sealants North America | Rockland, Town of | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| ICIvex CORP. | Newton | MA | Paper Manufacturing322200 | — | ◇ UNVERIFIED |
| IIIxys Integrated Circuits Division INC | Beverly | MA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| JCJabil Circuit | Billerica | MA | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| JMJames Monroe Wire and Cable C | South Lancaster | MA | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| JMJames Monroe Wire & Cable Corporation | Lancaster | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| JCJapenamelac Corporation | Chelmsford | MA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| JDJefferson Development Partners LLC | Taunton | MA | Textile Mills313210 | — | ◇ UNVERIFIED |
| JMJen Manufacturing Incorporated | Millbury | MA | Miscellaneous Manufacturing339994 | — | ◇ UNVERIFIED |
| JEJet Engine Technology | Danvers | MA | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| JCJeweled Cross | North Attleboro | MA | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| JHJ H Lynch & Sons Paving | Millbury | MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JCJ&j Corrugated Box (georgia-pacific) | Franklin | MA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| JMJms Manufacturing CO INC | Fall River | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| JJJohn J Adams Die CORP | Worcester | MA | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| JJostens | Attleboro | MA | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| JIJsb Industries | Chelsea | MA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| JCJustin Clothing CO | New Bedford | MA | Apparel Manufacturing315222 | — | ◇ UNVERIFIED |
| KCKapstone Container CORP | West Springfield | MA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| KNKellwood New England | Brockton | MA | Apparel Manufacturing315233 | — | ◇ UNVERIFIED |
| KLKennedy Lofts | Cambridge | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| KAKevins Automotive | Lowell | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| KAKeystone Automotive | Taunton | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| KFKidde Fenwal Combustion Research Center | Holliston | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| KCKimball CO INC | E Longmeadow | MA | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| KEKirk Eastern | Gardner | MA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| KCKollmorgen CORP Electro-optical Div | Northampton | MA | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| KTKonarka Technologies | New Bedford, City of | MA | Paper Manufacturing322222 | — | ◇ UNVERIFIED |
| KTKonarka Technologies | Lowell | MA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| KHKorber Hats Incorporated | Fall River | MA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
