Machias Savings Bank
- Street : 6 Penobscot Valley Ave.
- City : Lincoln
- Phone : (207) 794-2500
- Website : https://machiassavings.bank/
Magic City Med Shop
- Street : 166 Central Street, Millinocket
- City : Millinocket
- Phone : (207) 261-1004
- Website : https://www.magiccitymedshop.com
Maine Avenue Manor
- Street : 110 Maine Ave.
- City : Millinocket
- Phone : (207) 621-7700
- Website : http://ccrealtymanagement.com
Maine Water Company
- Street : Route 11
- City : Millinocket
- Phone : (207) 723-6278
- Website : https://mainewater.com
Michael Michaud
- Street : 3 Birch St.
- City : East Millinocket
- Phone : Individual
Michael R. Crowley
- Street : 73 Water St.
- City : Millinocket
- Phone : Individual
Millinocket – Unified Performing Arts Boosters
- Street : 199 State Street
- City : Millinocket
- Phone : (207) 723-6430
- Website : https://www.facebook.com/Millinocket-Performing-Arts-527003194038274/
Millinocket Fabrication & Machine
- Street : 432 Katahdin Ave.
- City : Millinocket
- Phone : (207) 723-9733
- Website : http://www.millinocketfab.com/
Millinocket Historical Society
- Street : 80 Central Street
- City : Millinocket
- Phone : (207) 723-5477
- Website : http://millinockethistoricalsociety.org/
Millinocket Memorial Library
- Street : 5 Maine Ave
- City : Millinocket
- Phone : (207) 723-7020
- Website : http://millinocketmemoriallibrary.org/
Millinocket Regional Hospital
- Street : 200 Somerset St.
- City : Millinocket
- Phone : (207) 723-5161
- Website : http://www.mrhme.org/
