Middlesex Police Departments List by Name
- Acton Police Department
- Arlington Police Department
- Ashby Police Department
- Ashland Police Department
- Ayer Police Department
- Bedford Police Department
- Belmont Police Department
- Bentley University Police Department
- Billerica Police Department
- Boston & Maine Railroad Police Department
- Boxborough Police Department
- Burlington Police Department
- Cambridge Police Department
- Chelmsford Police Department
- Concord Police Department
- Dracut Police Department
- Dunstable Police Department
- Everett Police Department
- Framingham Police Department
- Framingham State College Police Department
- Groton Police Department
- Harvard University Police Department
- Holliston Police Department
- Hudson Police Department
- Lasell-Mount Ida College Police Department
- Lexington Police Department
- Lincoln Police Department
- Littleton Police Department
- Lowell Police Department
- Malden Police Department
- Marlborough Police Department
- Massachusetts Institute of Technology Police Department
- Massachusetts State Police
- Maynard Police Department
- Medford Police Department
- Melrose Police Department
- Middlesex County Constables Office
- Middlesex County Sheriff's Office
- Natick Police Department
- Newton Police Department
- North Eastern Massachusetts Law Enforcement Council "NEMLEC"
- North Reading Police Department
- Pepperell Police Department
- Reading Police Department
- Sherborn Police Department
- Shirley Police Department
- Somerville Auxiliary Police Department
- Somerville Police Department
- Sommerville Police Department
- Stoneham Police Department
- Stow Police Department
- Sudbury Police Department
- Tewksbury Police Department
- Town of Acton Police Department
- Townsend Police Department
- Tyngsboro Police Department
- U.S. Department of the Army Police Department
- U.S. Department of Veterans Affairs
- University of Massachusetts - Lowell Police Department
- Wakefield Police Department
- Waltham Police Department
- Watertown Police Department
- Wayland Police Department
- Westford Police Department
- Weston Police Department
- Wilmington Police Department
- Winchester Police Department
- Woburn Police Department