Cities in Japan

Ogōri-shimogō
Ōhara
Ōi
Ōiso
Ōita
Ojiya
Ōkawa
Ōkawara
Okaya
Okayama
Okazaki
Okegawa
Okinawa
Ōkuchi-shinohara
Okunoya
Ōmachi
Omaezaki
Ōmagari
Ōmamachō-ōmama
Ōme
Omigawa
Ōmihachiman
Omitama
Ōmiya
Ōmura
Ōmuta
Onagawa Chō
Ono
Onoda
Ōno-hara
Ōnojō
Onomichi
Osaka
Ōsaka-sayama
Ōsaki
Ōshima
Ōshū
Ōta
Ōtake
Otaru
Ōtawara
Otofuke
Ōtsu
Ōtsuchi
Ōtsuki
Ōuda
Owase
Oyabe