- Maha Wadduwa East
- Maha Wadduwa West
- Maha Waskaduwa
- Mahagama North
- Mahagama South
- Mahagammedda
- Mahagewatta
- Mahagoda
- Mahagonaduwa
- Mahakele
- Mahakithgama
- Mahalanda
- Maharekma
- Mahawatta
- Mahawila
- Mahayala
- Mahena
- Makalandawa
- Malaboda
- Malamulla
- Malegoda
- Malewana
- Malewangoda
- Maligahena
- Malindagoda
- Maliyalamulla
- Manhandiya
- Mannawatta
- Mappala
- Marakkalahawatta