- Madisonville
- Mamou
- Mandeville
- Mangham
- Mansfield
- Mansura
- Many
- Maringouin
- Marion
- Marksville
- Marrero
- Martin
- Mathews
- Maurice
- McNary
- Melville
- Mer Rouge
- Meraux
- Mermentau
- Merrydale
- Merryville
- Metairie
- Metairie Terrace
- Midway
- Milton
- Minden
- Minorca
- Monroe
- Montegut
- Montegut
- Monterey
- Montgomery
- Monticello
- Monticello
- Montpelier
- Montz
- Mooringsport
- Moreauville
- Morgan City
- Morganza
- Morse
- Moss Bluff
- Mound
- Mount Lebanon
