- Minerva Plantation
- Mink
- Mink Island
- Minorca
- Mira
- Mire
- Missionary
- Mitchell
- Mitchell
- Mitchell Hammock
- Mitchell Island
- Mitchell Key (historical)
- Mitchiner
- Mittie
- Mix
- Mobile Estates Mobile Home Park
- Mobile Home Acres
- Mobile Home Park
- Modeste
- Mohawk City
- Moller
- Moncla
- Money Island
- Monhegan
- Monkey Island
- Monkey Island
- Monks Hammock
- Monroe
- Monroe
- Monsecour