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- (Anuradhapura District) Olugaskada
- (Anuradhapura District) Oyamaduwa
- (Anuradhapura District) Olugollewa
- (Anuradhapura District) Olupehichchawa
- (Anuradhapura District) Oyagama
- (Anuradhapura District) Obadayagama
- (Anuradhapura District) Olobbawa
- (Anuradhapura District) Olombewa
- (Anuradhapura District) Olugaskada
- (Anuradhapura District) Olugaskada
- (Anuradhapura District) Ottappuwa
- (Anuradhapura District) Olugaskadawala
- (Anuradhapura District) Olugollewa
- (Anuradhapura District) Olukaranda
- (Anuradhapura District) Olupanduruwewa
- (Anuradhapura District) Oluwewa
- (Polonnaruwa District) Onegama
- (Anuradhapura District) Orukmankulama
- (Anuradhapura District) Orulotagama