- Malgammana
- Malgandeniya
- Malgolla Colony
- Malgollawatta
- Maligatenna
- Maluanehinna
- Mampitiya
- Mamudawela
- Mandandawela
- Maneluwa
- Mangalagama
- Mangoda
- Maoyawatta
- Mapanawatura
- Marahena
- Marassana
- Maratugoda
- Marawanagoda
- Marawikumbura
- Mariawatta
- Maruddana
- Marywila
- Masgolla
- Masthinawatta Colony
- Mathgamuwa
- Matiyagollawatta
- Maussaw
- Maussawa
- Mavilmada
- Mawatagama