Regions of Japan
- Ponyambetsu-gawa
- Pontomari
- Ponto
- Pon Numa
- Pon-shosuke
- Pon-shire-saki
- Pon-shikutsushi-saki
- Pon-pekereota
- Pononemoto
- Ponnosawa
- Ponnai-gawa
- Ponkinaomaru-yama
- Ponitakiri-ishi
- Ponporoto
- Ponchimaebira
- Pon-chashikotsu
- Ponpira
- Pommukarisho-iwa
- Pommai-hana
- Pommai
- Honbetsu Gawa
- Pombetsu-dake
- Piyashiri Yama
- Bifuka
- Pitatanunke
- Pisshiri Zan
- Pisenai Yama
- Pirikanupuri
- Pirikaneppu
- Pirigai San
- Pippu-dake
- Pippu
- Pinne-yama
- Binneshiri Dake
- Binneshiri
- Pinneshiri
- Petegari Dake
- Perari Yama
- Pēpenai-gawa
- Peoppe Yama
- Penke Yama
- Penke Numa
- Penke-nikoro-gawa
- Penke-gawa
- Pekinno-hana
- Pekere Yama
- Peitoru-gawa
- Peipan-yama
- Pashikuru Numa
- Paromautsunai Gawa
- Panke Zan
- Panke-yama
- Panke-yama
- Panke Numa
- Pankenūshi Gawa
- Panke-horonai-yama
- Pankechin-gawa
- Panke
- Ōzukushi-yama
- Ō-zaki
- Ōsai Gawa
- Ōyu Gawa
- Towada-ōyu
- Ōyo Jima
- Oyochi
- Owasarabi-yama
- Ōwani Machi
- Ōwani
- Ōwada
- Ō-usu
- Otsukushi-yama
- Tokachi Gawa
- Ō-tsubo-gawa
- Ōtsu
- Otoshibe Misaki
- Otoshibe Gawa
- Otoshibe-gawa
- Otoshibe
- Otoshibe
- Otorochikushi-saki
- Ōtomari
- Otoineppu Misaki
- Otoineppu Gawa
- Otoineppu
- Otoineppu
- Otofuke Yama
- Otofuke Gawa
- Otofuke-chō
- Otofuke
- Otoebokke
- Ōtodokko Gawa
- Ōtodo
- Otobe-yama
- Otobe-hana
- Otobe-dake
- Otobe-chō
- Otobe
- Otchūbe
- Otaru-tai
- Otaru-shi
- Otaru-kō
- Otaruchikkō-eki
- Otaru-eki
- Otaru
- Otanoshike
- Otanegawa
- Otamoi-yama
- Utakoshi
- Otakomushube
- Ōtaki-mura
- Ōta
- Osoushi-gawa
- Nakaosotsubetsu
- Ōsori
- Osore-zan
- Osore-yama
- Osonaeno-saki
- Osokinai
- Oshoro-wan
- Oshoro
- Oshonnai
- Oshiraneppu Gawa
- Oshirabetsu
- Oshima-shichō
- Oshima-hantō
- Ō-shima
- Oshidomari Wan
- Oshidomari Mura
- Oshidomari Kō
- Oshidomari
- Oshamambe-gawa
- Oshamambe-dake
- Oshamambe-chō
- Oshamambe
- Ōsawa
- Osausu
- Osaushi-yama
- Osatsu-numa
- Osatsubechō
- Osashima
- Osarushinai
- Osarunai Dake
- Osaru-gawa
- Osaru
- Osarizawa Machi
- Osarizawa Kōzan Ato
- Osanai-gawa
- Osamunai
- Ō-saku-ne
- Ō-saki
- Ō-saki
- Orokunnenupuri-yama
- Orofure-yama
- Orizume Dake
- Orito Gawa
- Orido-saki
- Oribe Yama
- Oputateshike-yama
- Opporo Gawa
- Opporo
- Ōnumachō
- Ō-numa
- Ō-numa
- Ō Numa
- Ō Numa
- Ō Numa
- Onoppunai Gawa
- Onoppunai
- Ōno-gawa
- Onoe-machi
- Onoe Machi
- Ōnobori-yama
- Ōno
- Ōno
- Muka
- Onnetomari-gawa
- Onnetō
- Onne-numa
- Onne Tō
- Onnenai
- Onne Gawa
- Yamahana
- Onnebetsu-dake
- Onnebetsumachi
- Onne
- Onna-wasarabi-yama
- Onizawa
- Oniwaki Kō
- Oniwaki
- Onishika-minatomachi
- Onishibetsu Gawa
- Onishibetsu-higashimachi
- Onisashi Yama
- Onetomanai
- Onenai
- Ō-ne
- Ō-ne
- Ōmu Gyokō
- Ōmu Gawa
- Ōmu Chō