| BHBachelder Holding, LLC | Portland | ME | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BWBagala Wood & Window Works | Gorham | ME | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| BBBaked by Bambi | Norway | ME | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BHBanded Horn Brewing Company | Biddeford | ME | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BCBangor Canvas | Bangor | ME | Textile Product Mills314912 | — | ◇ UNVERIFIED |
| BMBangor Millwork & Supply, INC. | Bangor | ME | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| BNBangor Neon | Bangor | ME | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| BPBarrett Paving Materials INC | Dover-foxcroft | ME | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BKBaryonyx Knife Company LLC | Bar Harbor | ME | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| BCB&B Custom Creations Inc | Oakland | ME | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| BPBeach Pea Baking Company LLC | Kittery | ME | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BJBecoming Jewelry LLC | Kennebunk | ME | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| BLBeerme, LLC | Scarborough | ME | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| BMBelanger Metalworks LLC | Biddeford | ME | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BBBelleflower Brewing Company, LLC | Portland | ME | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BMBerlin Mills Wharf | Portland | ME | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| BFBethel Furniture Stock | Bethel | ME | Furniture and Related Product Manufacturing337126 | — | ◇ UNVERIFIED |
| BBBigelow Brewing Company | Skowhegan | ME | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BBBlack Bear Industrial | Rumford | ME | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BBBlackbird Baking Company LLC | Portland | ME | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BPBlack Pug Brewing Company, LLC | Brunswick | ME | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BTBlast Tech Enterprises | Raymond | ME | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| BRBlue Rock Industries | Westbrook | ME | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BBBluetriton Brands, INC. | Saco | ME | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| BCBold Coast Smoke House | Lubec | ME | Food Manufacturing311711 | — | ◇ UNVERIFIED |
| BJBootleg Jerky | Columbia | ME | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| BUBottoms USA INC | Auburn | ME | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BFBragdon Farms, LLC | Waterville | ME | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| BLBrb, LLC | Winterport | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◇ UNVERIFIED |
| BGBrian Gilbert Associates | Cumberland | ME | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| BMBrightside Marine | Belgrade Lakes | ME | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| BGBrown's Greens | Brooksville | ME | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BABruce a Manzer INC | Anson | ME | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BTB & T Pallet Recycling, INC. | Lewiston | ME | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| BLBuxtonboats, LLC | Stonington | ME | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| CCC.a. Construction, INC. | Sullivan | ME | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
| CWCape Whoopie, Maine's Gourmet Whoopie Pie | South Portland | ME | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| CPCaron's Paving & Sealing | Fort Kent | ME | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CWCarrier Welding and Fabrication, LLC | Wilton | ME | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| CMCarroll Materials, LLC | Westbrook | ME | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CMCarroll Materials, LLC | Limerick | ME | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CBCasco Bay Steel - Saco | Saco | ME | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CBCasco Bay Steel Structures, INC. | South Portland | ME | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CPCatalyst Paper Operations, INC. | Rumford | ME | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| CICedar Ideas, INC. | Smyrna Mills | ME | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| CMCedar Mountain Cupolas LLC | Gray | ME | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| CMCentral Maine Metal Fabrication LLC | Pittsfield | ME | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| CICerahelix, INC. | Bangor | ME | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| CMChart Metalworks, LLC | Portland | ME | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| CSChase Small Craft LLC | Saco | ME | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
