- Maywood Park
- McBee Island
- McCaffrey Island
- McCoy
- McCredie Springs
- McDonald
- McEwen
- McGregor Island
- McGuire Island
- McKay
- McKee
- McKee Bridge
- McKenzie Bridge
- McKinley
- McLain Island
- McLeod
- McMinnville
- McNary
- McNulty
- McPhersons Island
- Meacham
- Meda
- Medford
- Medical Springs
- Mehama
- Melrose
- Melville
- Memaloose Island (historical)
- Memaloose Island (historical)
- Merlin