- Mauston
- Maxville
- May Corner
- Mayfield
- Mayville
- Mazomanie
- McAllister
- McCartney
- McClary Island
- McCord
- McDowell Island
- McFarland
- McFetridge Island
- McHenry Island
- McKinley
- McMillan
- McNaughton
- McNott Island
- Meadow Valley
- Mecan
- Medary
- Medford
- Medina
- Medina Junction
- Meehan
- Meeker
- Meekers Grove
- Meeme
- Meggers
- Mellen