| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
1801  | Ō Shima O Shima,O Sima,O-shima,da dao,Ō Shima,Ō-shima,大島 | Japan, Yamaguchi | island | N 34° 0′ 11'' | E 131° 48′ 29'' |
| 1802 | Azuchi Ōshima Azuchi Oshima,Azuchi Ōshima,Azuchi-oshima,Azuchi-ōshima,Azuti-O Sima,Azuti-Ō Sima,O Sima,O-shima,Oko... | Japan, Nagasaki | island | N 33° 29′ 2'' | E 129° 32′ 49'' |
| 1803 | Kii Ōshima  Kii Oshima,Kii Ōshima,O Sima,O-shima,OO Sima,ji yi da dao,Ō Sima,Ō-shima,紀伊大島 | Japan, Wakayama Higashimuro-gun > Kushimoto Chō | island population 2,000 | N 33° 28′ 0'' | E 135° 49′ 44'' |
| 1804 | Ō Shima O Shima,O Sima,O-shima,da dao,Ô Sima,Ō Shima,Ō-shima,大島 | Japan, Nagasaki | island | N 33° 10′ 9'' | E 129° 1′ 17'' |
| 1805 | Ō Shima Ki-shima,O Shima,O Sima,O-shima,huang dao,Ō Shima,Ō-shima,黄島 | Japan, Nagasaki | island | N 32° 33′ 58'' | E 128° 53′ 58'' |
| 1806 | Ō Shima O Shima,O Sima,O-shima,da dao,ooshima,Ō Shima,Ō-shima,おおしま,オオシマ,大島 | Japan, Kumamoto | island | N 32° 32′ 25'' | E 130° 33′ 12'' |
| 1807 | O Shima O Shima,O Sima,O-shima,Otoko-shima,Taka Sima,nan dao,男島 | Japan, Nagasaki | island | N 32° 2′ 47'' | E 128° 24′ 1'' |
| 1808 | Ō Jima O Jima,O-jima,O-shima,Ono Sima,ao wu dao,oojima,Ō Jima,Ō-jima,Ō-shima,おおじま,奥武島 | Japan, Okinawa | island | N 26° 9′ 22'' | E 127° 16′ 22'' |
| 1809 | Ōshiba Jima O-shiba-shima,Oshiba,Oshiba Jima,Oshiba-jima,Osiba Sima,da zhi dao,ooshibajima,Ōshiba Jima,Ōshiba-ji... | Japan, Hiroshima Higashihiroshima Shi | island | N 34° 16′ 30'' | E 132° 48′ 5'' |
| 1810 | Ōse Bana Ose Bana,Ose-hana,Oseno-hana,Usen-hana,da lai bi,Ōse Bana,Ōse-hana,Ōseno-hana,大瀬鼻 | Japan, Kagoshima Kimotsuki Gun > Minamiōsumi Chō | point | N 31° 0′ 14'' | E 130° 40′ 53'' |
| 1811 | Kosei Jima Ko-sei-jima,Kose-i Sima,Kosei Jima,Kosei-shima,O-sei-jima,xiao lai ju dao,小瀬居島 | Japan, Kagawa | island | N 34° 22′ 22'' | E 133° 51′ 11'' |
| 1812 | Ōsebanare-jima Ose Banare,Ose-banare-shima,Osebanare Sima,Osebanare-jima,Ōse-banare-shima,Ōsebanare Sima,Ōsebanare-... | Japan, | island | N 24° 37′ 1'' | E 124° 19′ 3'' |
| 1813 | Ōse-bana Miyazaki-hana,Ose-bana,Ose-hana,Oze Hana,Uze Hana,Uze-bana,Ōse-bana,Ōse-hana,Ūze-bana | Japan, Nagasaki | point | N 32° 37′ 0'' | E 129° 50′ 0'' |
| 1814 | Ōsa Yama Osa Yama,Osa-yama,Taisa-yama,da zuo shan,Ōsa Yama,Ōsa-yama,大佐山 | Japan, Shimane Hamada Shi | mountain | N 34° 44′ 51'' | E 132° 12′ 4'' |
| 1815 | Ōsakiga Hana Osaki-hana,Osakiga Hana,Osakiga-hana,Osakino-hana,da qike bi,Ōsaki-hana,Ōsakiga Hana,Ōsakiga-hana,Ōs... | Japan, Kagoshima Kagoshima Shi | point | N 31° 39′ 29'' | E 130° 36′ 59'' |
| 1816 | Ōsakikami Jima Osaki-Kami Sima,Osaki-kami-shima,Osakikami,Osakikami Jima,Osakikami-jima,da qi shang dao,Ōsaki-kami-... | Japan, Hiroshima | island | N 34° 14′ 17'' | E 132° 53′ 48'' |
| 1817 | Ōsaki Bana O-saki,Ohana Bana,Osaki Bana,Osaki-bana,Osaki-misaki,da qi bi,Ōhana Bana,Ōsaki Bana,Ōsaki-bana,大崎鼻 | Japan, Yamaguchi Shimonoseki Shi | point | N 34° 12′ 54'' | E 130° 54′ 59'' |
| 1818 | Ō Saki Kotsuba-saki,Kotsubo Saki,O Saki,O-saki,Osaki,da qi,Ō Saki,Ō-saki,大崎 | Japan, Kanagawa Zushi | point | N 35° 17′ 30'' | E 139° 33′ 28'' |
| 1819 | Okina Zaki O-saki,Okina Zaki,Okina-saki,Okina-zaki,weng qi,Ō-saki,翁崎 | Japan, Yamaguchi Hofu | point | N 34° 0′ 52'' | E 131° 36′ 0'' |
| 1820 | Ōsaki Bana O-saki,Osaki Bana,Osaki-bana,Osaki-hana,da qi bi,Ō-saki,Ōsaki Bana,Ōsaki-bana,大崎鼻 | Japan, Nagasaki Sasebo Shi | point | N 33° 10′ 6'' | E 129° 38′ 15'' |
| 1821 | Cape Osaki Cape Osaki,O Saki,O-saki,da qi,oosaki,Ō Saki,Ō-saki,おおさき,オオサキ,大崎 | Japan, Okinawa Ishigaki-shi | point | N 24° 24′ 58'' | E 124° 5′ 5'' |
| 1822 | Ufu Saki O-saki,Ofu-saki,Ufu Saki,Ufu-saki,Uhu Saki,da qi,Ō-saki,大崎 | Japan, Okinawa Kunigami-gun > Kunigami Village | cape | N 26° 40′ 38'' | E 128° 16′ 40'' |
| 1823 | Ōzakai Yama Daikyo Yama,Osakai-yama,Ozakai Yama,da jing shan,Ōsakai-yama,Ōzakai Yama,大境山 | Japan, Niigata Iwafune-gun > Sekikawa Mura | mountain | N 37° 59′ 42'' | E 139° 38′ 36'' |
| 1824 | Ōsaka Heiya Kinai plain,Lower Kinki Plain,Osaka Heiya,Osaka-heiya,Sekkasenno-heiya,Settsu plain,da ban ping ye,Ō... | Japan, | plain(s) | N 34° 40′ 0'' | E 135° 30′ 0'' |
| 1825 | Aosa Hana Aosa Hana,Aosa-bana,Aosa-hana,Osa-bana,Osa-hana,qing zuo bi,Ōsa-bana,Ōsa-hana,青佐鼻 | Japan, Okayama Asakuchi Shi | point | N 34° 28′ 0'' | E 133° 34′ 36'' |
| 1826 | Origami Bana Origami Bana,Origami-bana,Origami-hana,Orikami Bana,Orikami-hana,zhe zhi bi,折紙鼻 | Japan, Nagasaki Gotō Shi | point | N 32° 50′ 37'' | E 128° 51′ 43'' |
| 1827 | Uppurui Bana Oppurui-bana,Uppuroi-bana,Uppuroi-hana,Uppurui Bana,Uppurui Hana,Uppurui-bana,shi liu dao bi,十六島鼻 | Japan, Shimane Izumo Shi | point | N 35° 28′ 10'' | E 132° 43′ 46'' |
| 1828 | Ōnyū Jima O-nyu Sima,Onyu Jima,Onyu Shima,Onyu-jima,Onyu-to,da ru dao,Ô-nyû Sima,Ōnyu Shima,Ōnyū Jima,Ōnyū-jim... | Japan, Oita Saiki Shi | island | N 33° 0′ 15'' | E 131° 55′ 40'' |
| 1829 | Mount Ontake Gunung Ontake,Monte Ontake,Monto Ontake,Mount Kiso Ontake,Mount Ontake,Ontake,Ontake Dagi,Ontake Dağ... | Japan, Nagano Kiso-gun > Ōtaki Mura | mountain elevation 3067m | N 35° 53′ 33'' | E 137° 28′ 50'' |
| 1830 | Ufu Yama O-yama,Ono-yama,Ufu Yama,da ye shan,Ō-yama,Ōno-yama,大野山 | Japan, Okinawa Shimajiri-gun > Izena Village | mountain | N 26° 56′ 34'' | E 127° 55′ 42'' |
| 1831 | Ōnogara Dake Onagara Dake,Onogara Dake,Onogara Take,Onogara-dake,Onokara-dake,da bi bing yue,Ōnogara Dake,Ōnokara... | Japan, Kagoshima Kanoya Shi | mountain | N 31° 29′ 7'' | E 130° 49′ 7'' |
| 1832 | Mount Onna Mont Onna,Mount Onna,Onna Dake,Onna-dake,Onna-take,Unna-dake,en na yue,jbl mwnt awna,mont Onna,جبل م... | Japan, Okinawa Kunigami-gun > Onna | mountain elevation 363m | N 26° 28′ 45'' | E 127° 52′ 29'' |
| 1833 | Onkami-shima Ogami Jima,Ogami Sima,Ogami-shima,Okami-jima,Ongami-shima,Soteso | Japan, | island | N 35° 38′ 0'' | E 135° 48′ 17'' |
| 1834 | On Jima O Sima,O-Shima,On Jima,On-jima,Otoko-shima,nan dao,男島 | Japan, Yamaguchi | island | N 34° 10′ 22'' | E 130° 54′ 9'' |
| 1835 | Oniki Zaki Oniki Zaki,Oniki-saki,Oniki-zaki,onikizaki,onukizaki,yu guan qi,おにきざき,おぬきざき,オニキザキ,オヌキザキ,魚貫崎 | Japan, Kumamoto Amakusa Shi | point | N 32° 14′ 36'' | E 129° 58′ 4'' |
| 1836 | Ōnechi Yama Onechi Yama,Onechi-yama,Oneji,Oneji-yama,da gen de shan,Ōnechi Yama,Ōnechi-yama,Ōneji,Ōneji-yama,大根地... | Japan, Fukuoka Chikushino-shi | mountain | N 33° 31′ 10'' | E 130° 36′ 35'' |
| 1837 | Ō Ne O Ne,O-ne,One-shima,da gen,Ō Ne,Ō-ne,Ōne-shima,大根 | Japan, Shizuoka | island | N 34° 36′ 20'' | E 138° 49′ 26'' |
| 1838 | Unajino Sachi Meseno-zaki,Onazeno-saki,Unajino Sachi,nu laino qi,unajinosachi,うなじのさち,女瀬ノ崎 | Japan, Okinawa Shimajiri-gun > Zamami Village | point | N 26° 14′ 0'' | E 127° 17′ 0'' |
| 1839 | Ōnaga Saki Naga-saki,Onaga Saki,Onaga-saki,Oneca-saki,da zhang qi,Ōnaga Saki,Ōnaga-saki,大長崎 | Japan, Ishikawa Wajima Shi | cape | N 37° 21′ 48'' | E 136° 45′ 29'' |
| 1840 | Mount Omoto Mount Omoto,Omoto Dake,Omoto-yama,wu mao deng yue,於茂登岳 | Japan, Okinawa Ishigaki-shi | mountain elevation 525m | N 24° 25′ 0'' | E 124° 11′ 0'' |
| 1841 | Ōmori Jima O-mori-jima,Omori Jima,Omori Shima,Omori Sima,da sen dao,Ō-mori-jima,Ōmori Jima,Ōmori Shima,大森島 | Japan, Shimane | island | N 36° 8′ 8'' | E 133° 10′ 27'' |
| 1842 | Omori Shima Komori Sima,Komori-shima,O-mori-jima,Omori Shima,xiao sen dao,小森島 | Japan, Shimane | island | N 36° 7′ 40'' | E 133° 7′ 15'' |
| 1843 | Ōmon Zaki Omon Zaki,Omon-saki,Omon-zaki,Oto-saki,da men qi,oomonzaki,Ōmon Zaki,Ōmon-saki,Ōmon-zaki,Ōto-saki,おお... | Japan, Kumamoto Ashikita-gun > Tsunagi Machi | point | N 32° 15′ 50'' | E 130° 25′ 43'' |
| 1844 | Ōmizaki Bana Omisaki-bana,Omizaki Bana,Omizaki-bana,Omizaki-hana,U-bana,da hai qi bi,Ōmisaki-bana,Ōmizaki Bana,Ōm... | Japan, Shimane Matsue Shi | point | N 35° 28′ 35'' | E 133° 8′ 36'' |
| 1845 | Ōmi Shima Aomi-shima,Omi Island,Omi Shima,Omi Sima,Omi-shima,qing hai dao,Ōmi Island,Ōmi Shima,Ōmi Sima,Ōmi-sh... | Japan, Yamaguchi | island | N 34° 25′ 24'' | E 131° 12′ 52'' |
| 1846 | Ōsakiga Hana Kara-saki,O-misaki,O-saki,Osakiga Hana,Osakiga-hana,Oura-hana,da qike bi,Ō-misaki,Ō-saki,Ōsakiga Han... | Japan, Shimane Ōda Shi | point | N 35° 11′ 24'' | E 132° 25′ 6'' |
| 1847 | Ōmine Yama Omine San,Omine Yama,Omine-yama,Omune-yama,da feng shan,Ōmine Yama,Ōmine-yama,Ōmune-yama,大峯山 | Japan, Shimane Oki District > Okinoshima Chō | mountain | N 36° 18′ 16'' | E 133° 16′ 41'' |
| 1848 | Ōmine Yama Omine Yama,Omine-san,Omine-yama,da feng shan,Ōmine Yama,Ōmine-san,Ōmine-yama,大峯山 | Japan, Hiroshima Hiroshima City > Saeki-ku | mountain | N 34° 25′ 0'' | E 132° 13′ 0'' |
| 1849 | Ōmine Zaki Omine Zaki,Omine-hana,Omine-misaki,Omine-saki,Ufummi-hana,da ling qi ,Ōmine Zaki,Ōmine-hana,Ōmine-mi... | Japan, Okinawa Naha Shi | cape | N 26° 11′ 54'' | E 127° 38′ 15'' |
| 1850 | Omae Zaki Omae Zaki,Omae-saki,Omae-zaki,Omaezaki,Omai Saki,yu qian qi,御前崎 | Japan, Shizuoka Omaezaki-shi | cape | N 34° 35′ 41'' | E 138° 13′ 35'' |
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