This is a list of law enforcement agencies in the state of Maine.
According to the US Bureau of Justice Statistics' 2008 Census of State and Local Law Enforcement Agencies, the state had 146 law enforcement agencies employing 2,569 sworn police officers, about 195 for each 100,000 residents.
State agencies
Maine Department of Corrections
Maine Department of Inland Fisheries and Wildlife
Maine Warden Service
Maine Department of Marine Resources
Maine Marine Patrol
Maine Department of Public Safety
Maine Bureau of Capitol Police
Maine Drug Enforcement Agency
Maine State Fire Marshal's Office
Maine State Police
Maine Department of Agriculture, Conservation and Forestry
Maine Forest Service
Maine Department of the Secretary of State
Bureau of Motor Vehicles
Division of Enforcement, Anti-Theft and Regulations
State of Maine Judicial Branch
Office of Judicial Marshals
Office of the Maine Attorney General
Investigation Division
County agencies
Municipal agencies
Tribal Police
Indian Township Police Department
Passamaquoddy Warden Service
Penobscot Nation Police Department
Penobscot Nation Warden Service
Pleasant Point Police Department
Railroad Police
Boston and Maine Railroad Police Department
Canadian Pacific Police Service
Campus Police
University of Maine Police Department
University of Southern Maine Police Department
University of Maine at Farmington Police Department