- Mata Colonia
- Mata Colonia Number 2
- Matador
- Matagorda
- Matagorda Island
- Mathis
- Matilda
- Matinburg
- Matt Colonia
- Matthews
- Matthews Place
- Mattox
- Mattson
- Maud
- Maudlowe
- Mauriceville
- Maverick
- Max Colonia
- Maxdale
- Maxey
- Maxey Town
- Maxwell
- May
- Mayd
- Mayde Creek Farms
- Maydelle
- Mayer
- Mayes Addition Colonia
- Mayfair
- Mayfield