| WWWindham Weaponry | Windham | ME | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| WBWise Business Forms (frmly Epx Group) | Portland | ME | Printing and Related Support Activities323115 | — | ◇ UNVERIFIED |
| WMWorumbo Mill | Lisbon | ME | Textile Mills313110 | — | ◇ UNVERIFIED |
| YMYankee Marina INC | Yarmouth | ME | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| YMYork Mfg INC | Sanford | ME | Primary Metal Manufacturing331421 | — | ◇ UNVERIFIED |
| 1T104956 - TIC - NAVFAC Portsmouth Dry Dock P-381 | Kittery | ME | Transportation Equipment Manufacturing336611 | 100-499 | ◐ LIKELY ACTIVE |
| 1F149 - Fryeburg, ME | Fryeburg | ME | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| 2D2020 Distilling | Wells | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| 2C27 Commercial Rd Kingfield, ME 04947 | Kingfield | ME | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| ACAbsolem Cider Company | Winthrop | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| AFAdvancePierre Foods, Inc. | Portland | ME | Food Manufacturing311615 | — | ◐ LIKELY ACTIVE |
| ADAegir's Den Meadery | Palermo | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| AHAero Heating & Ventilating | Westbrook | ME | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| AHAfter Harvest Cider Company LLC | Acton | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| ABAllagash Brewing Company | Portland | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| ASAll States Construction, Inc. (Limerick ME) | Limerick | ME | Petroleum and Coal Products Manufacturing324121 | 20-99 | ◐ LIKELY ACTIVE |
Altium Packaging - Poland Plant | Poland | ME | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| ADAmbient Diamond, INC. | Westbrook | ME | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| AIAmerican Iron and Metal - Arundel | Arundel | ME | Fabricated Metal Product Manufacturing332311 | 1-19 | ◐ LIKELY ACTIVE |
| AIAmerican Iron and Metal -Bangor | Bangor | ME | Miscellaneous Manufacturing339910 | 1-19 | ◐ LIKELY ACTIVE |
| AIAmerican Iron and Metal - Caribou | Caribou | ME | Fabricated Metal Product Manufacturing332996 | 1-19 | ◐ LIKELY ACTIVE |
| AIAmerican Iron and Metal - Oakland | Oakland | ME | Fabricated Metal Product Manufacturing332311 | 1-19 | ◐ LIKELY ACTIVE |
| ARAmerican Rheinmetall Biddeford | Biddeford | ME | Fabricated Metal Product Manufacturing332994 | 20-99 | ◐ LIKELY ACTIVE |
| ASAmerican Steel and Aluminum LLC | South Portland | ME | Fabricated Metal Product Manufacturing332312 | — | ▲ REPORTED CLOSED |
AnalytiChem USA, Inc Westbrook | Westbrook | ME | Chemical Manufacturing325414 | 1-19 | ◐ LIKELY ACTIVE |
| ASAncient Souls Distillery | Shapleigh | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| ALAnthony Lee's Winery | Dexter | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| AApparel | Farmington | ME | Apparel Manufacturing315120 | 20-99 | ◐ LIKELY ACTIVE |
| ADArbor Distillery LLC | Oakfield | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| ACARCH Cutting Tools - Maine LLC | Cornish | ME | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| ASA Small Good, LLC | Hope | ME | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| ABAugusta Branch | Augusta | ME | Food Manufacturing311520 | 1-19 | ◐ LIKELY ACTIVE |
| BIBAFS, Inc. | Bangor | ME | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BCBangor CPL LLC | Bangor | ME | Food Manufacturing311812 | 20-99 | ◐ LIKELY ACTIVE |
| BHBar Harbor Cellars Winery | Bar Harbor | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BMBartlett Maine Estate Winery | Gouldsboro | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BRBatson River Brewing and Distilling | Portland | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BRBatson River Brewing & Distilling | Biddeford | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BCBay Cider Works | South Portland | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BBBear Bones Distilling & Spirits | Lewiston | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BBBirchwood Brewing | Gray | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BBBissell Brothers | Portland | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BDBlack Diamond Whiskey L.l.c. | Brunswick | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BBBlue Barren Distillery | Hope | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BLBlue Lobster Wine Company | Portland | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BBluet | Scarborough | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BVBonaventura Vineyards LLC | Hartford | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BVBon Vent Cider | Hancock | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BOBoothby's Orchard and Farm | Livermore | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BMBOSM Monarch Mountain | Acton | ME | Nonmetallic Mineral Product Manufacturing327390 | 1-19 | ◐ LIKELY ACTIVE |