O (Kancheepuram) Oratti (Tiruvannamalai) Oddapālaiyam (Tiruvannamalai) Oddarvīdu (Tiruvannamalai) Osūr (Tiruvannamalai) Oddapālaiyam (Tiruvannamalai) Olappākkam (Tiruvannamalai) Oddarnattam (Kancheepuram) Oddantāngal (Kancheepuram) Olukarai (Kancheepuram) Orīkkai (Kancheepuram) Olukkolpattu (Tiruvannamalai) Olukkavākkam (Vellore) Oclicheri (Villupuram) Oddampattu (Villupuram) Olagalampūndi (Villupuram) Odayanattam (Villupuram) Oduvankuppam (Villupuram) Odiyattūr (Villupuram) Odaiyāntāngal (Tiruvannamalai) Ogaiyūr (Tiruvannamalai) Oddantāngal (Tiruvannamalai) Olagampattu (Vellore) Olugūr (Vellore) Olalai (Villupuram) Oddampattu (Tiruvannamalai) Olaippādi (Tiruvannamalai) Odaiyenandal (Tiruvannamalai) Otteri (Tiruvannamalai) Ogūr (Tiruvannamalai) Odalavādi 20 21 22 23 24