| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3801  | Oseosan  Oseosan,Oso-san,Osŏ-san,oseosan,오서산 | South Korea, Chungcheongnam-do Boryeong-si > Cheongso-myeon | mountain elevation 791m | N 36° 27′ 29'' | E 126° 39′ 32'' |
3802  | Osŏ-ri Oso-ri,Osŏ-ri,oseoli,오서리 | South Korea, Gyeongsangnam-do Changwon-si > Masanhappo-gu | locality | N 35° 5′ 47'' | E 128° 25′ 17'' |
| 3803 | Osŏng-ni Osong-ni,Osŏng-ni,oseongli,오성리 | South Korea, Chungcheongnam-do Hongseong-gun > Janggok-myeon | locality | N 36° 29′ 7'' | E 126° 39′ 23'' |
| 3804 | Osik-to Goroto,Gorōtō,Goshoku-to,Goshoku-tō,North Brown Island,Orang-do,Osik-to,Youjiku To | South Korea, Jeollabuk-do | land-tied island | N 35° 57′ 33'' | E 126° 33′ 23'' |
3805  | Eosirang Eosirang,Osi,Osi-ri,Osiryang,eosilang,Ŏsi,Ŏsi-ri,Ŏsiryang,어시랑 | South Korea, Jeollanam-do Hwasun-gun > Iyang-myeon | populated place | N 34° 54′ 41'' | E 127° 4′ 2'' |
| 3806 | Osang Gosan-ri,Osal-li,Osan,Osan-ni,Osang,Osang-ni,osang,오상 | South Korea, Jeollanam-do Jindo-gun > Gogun-myeon | populated place | N 34° 29′ 46'' | E 126° 20′ 25'' |
| 3807 | Osal-li Osal-li,Osan-ni | South Korea, Jeollabuk-do Imsil-gun > Osu-myeon | locality | N 35° 33′ 7'' | E 127° 18′ 10'' |
| 3808 | Osang-ni Osang-ni,osangli,오상리 | South Korea, Gyeongsangbuk-do Sangju-si > Jungdong-myeon | locality | N 36° 25′ 51'' | E 128° 16′ 38'' |
| 3809 | Eoryujeongdo Eoryujeongdo,Gyoyusei-to,Gyoyūsei-tō,Oryujong-do,Oyujong-do,eolyujeongdo,Ŏryujŏng-do,Ŏyujŏng-do,어류정도 | South Korea, Incheon | island | N 37° 39′ 13'' | E 126° 20′ 3'' |
| 3810 | Oryuchon Oryu-ch'on,Oryu-ch’on,Oryu-dong,Oryuchon,Oyu-dong,olyuchon,오류촌 | South Korea, Jeollanam-do Muan-gun > Haeje-myeon | populated place | N 35° 6′ 21'' | E 126° 19′ 19'' |
| 3811 | Oryeokdo Goreki-to,Goreki-tō,Oreki,Oryeokdo,Oryok-to,Oryŏk-to,Oyok-to,Oyŏk-to,olyeogdo,오력도 | South Korea, Chungcheongnam-do | island | N 36° 8′ 16'' | E 126° 29′ 6'' |
| 3812 | Eyang-ni Eyang-ni,Oryang-ni,Ŏryang-ni | South Korea, Jeollabuk-do Iksan-si > Mangseong-myeon | locality | N 36° 6′ 0'' | E 127° 2′ 0'' |
| 3813 | Oryang-ni Oryang-ni,Oyang-ni | South Korea, Gyeongsangnam-do Geoje-si | locality | N 34° 53′ 0'' | E 128° 30′ 0'' |
| 3814 | Eoreugeum Eoreugeum,Eoru,Etsuu,Oru,Woru,Wŏru,eoleugeum,eolu,Ŏru,어루,어르금 | South Korea, Incheon Ongjin-gun > Deokjeok-myeon | populated place | N 37° 5′ 6'' | E 125° 57′ 27'' |
| 3815 | Ragged Island Gyoraku-to,Gyoraku-tō,Omaku To,Onak-to,Onaku To,Orak-to,Ragged Island,Ŏnak-to,Ŏrak-to | South Korea, Jeollanam-do | island | N 34° 35′ 1'' | E 125° 50′ 17'' |
| 3816 | Eonyang Eonyang,Genyo,Genyō,Kenyo,Kenyō,Onyang,Unyang,eon-yang,Ŏnyang,Ŭnyang,언양 | South Korea, Ulsan Ulju-gun > Samnam-eup | populated place | N 35° 33′ 32'' | E 129° 7′ 13'' |
| 3817 | Onsu-ri Onsu-ri,Onsugok,Onsui,Onsuiri,onsuli,온수리 | South Korea, Incheon Ganghwa-gun > Gilsang-myeon | populated place | N 37° 38′ 24'' | E 126° 29′ 27'' |
| 3818 | Onnamugol Chimok-tong,Onnamu-kol,Onnamugol,Simok-tong,ochnamugol,옻나무골 | South Korea, Gyeongsangbuk-do Mungyeong-si > Gaeun-eup | populated place | N 36° 41′ 19'' | E 127° 58′ 19'' |
| 3819 | Ongnyul-tong Ogyul-tong,Ongnyul-tong | South Korea, Gyeongsangbuk-do Gimcheon-si > Eomo-myeon | locality | N 36° 10′ 0'' | E 128° 6′ 0'' |
| 3820 | Ongnam-dong Ongnam-dong,Ongnam-ni | South Korea, Chungcheongnam-do | locality | N 36° 2′ 0'' | E 126° 40′ 0'' |
| 3821 | Ongma-ri Ongma-ri,ogmali,옥마리 | South Korea, Jeollanam-do Boseong-gun > Nodong-myeon | locality | N 34° 48′ 8'' | E 127° 2′ 6'' |
| 3822 | Oeongchi Oeongchi,Ongjin-dan,Oshin-tan,oeongchi,Ōshin-tan,외옹치 | South Korea, Gangwon-do | cape | N 38° 10′ 51'' | E 128° 36′ 53'' |
| 3823 | Ongdo Baker Island,Doku-to,Doku-tō,O-to,Ongdo,Tok-to,ongdo,Ō-tō,옹도 | South Korea, Chungcheongnam-do | island | N 36° 38′ 50'' | E 126° 0′ 29'' |
| 3824 | Ongcheon Onch'on-dong,Onchong,Onch’ŏn-dong,Ongch'on,Ongch'on-dong,Ongcheon,Ongch’ŏn,Ongch’ŏn-dong,ongcheon,옹천 | South Korea, Gyeongsangbuk-do Andong-si > Bukhu-myeon | populated place | N 36° 41′ 3'' | E 128° 42′ 8'' |
| 3825 | Ongam Ongam,Ongam-ni,Tokpau,Torbaudo,ong-am,옹암 | South Korea, Jeollanam-do Haenam-gun > Samsan-myeon | populated place | N 34° 31′ 43'' | E 126° 32′ 58'' |
| 3826 | Ondong Ondolgae,Ondolp'o,Ondolp’o,Ondong,Onsekiho,Ontoruho | South Korea, Jeollanam-do Yeosu-si > Myodo-dong | populated place | N 34° 53′ 0'' | E 127° 44′ 0'' |
| 3827 | Onsen-ri Onch'on-ni,Onch’ŏn-ni,Onsen-ri | South Korea, North Chungcheong Chungju-si > Suanbo-myeon | locality | N 36° 51′ 0'' | E 127° 59′ 0'' |
| 3828 | Onsen-ri Onch'on-ni,Onch’ŏn-ni,Onsen-ri | South Korea, Chungcheongnam-do Asan-si | locality | N 36° 47′ 0'' | E 127° 1′ 0'' |
| 3829 | Ŏnam-ni Onam-ni,Yonam-ni,Yŏnam-ni,Ŏnam-ni | South Korea, Chungcheongnam-do Seosan-si > Haemi-myeon | locality | N 36° 43′ 0'' | E 126° 29′ 0'' |
| 3830 | Amhyeolli Amhyeolli,Amhyon-ni,Amhyŏn-ni,Omhyon-ni,Umhyol-li,Umhyon,amhyeonli,eumhyeon,eumhyeonli,Ŏmhyŏn-ni,Ŭmh... | South Korea, Chungcheongnam-do Boryeong-si > Cheongna-myeon | populated locality | N 36° 24′ 46'' | E 126° 41′ 8'' |
| 3831 | Eomgogae Eomgogae,Om-gogae,Omgoge,eomgogae,Ŏm-gogae,Ŏmgoge,엄고개 | South Korea, Gyeonggi-do Yeoncheon-gun > Jung-myeon | hill | N 38° 11′ 45'' | E 127° 2′ 18'' |
| 3832 | Oma-ri Oma-ri,omali,오마리 | South Korea, Jeollanam-do Goheung-gun > Dodeok-myeon | locality | N 34° 31′ 51'' | E 127° 12′ 11'' |
| 3833 | Ok-tong Gyoku-do,Gyoku-dō,Ok-tong | South Korea, Gyeongsangbuk-do Andong-si > Pyeonghwa-dong | locality | N 36° 34′ 0'' | E 128° 43′ 0'' |
| 3834 | Ŏktae-ri Oktae-ri,eogdaeli,Ŏktae-ri,억대리 | South Korea, Chungcheongnam-do Seosan-si > Haemi-myeon | locality | N 36° 43′ 46'' | E 126° 31′ 14'' |
| 3835 | Oksŏng-ni Oksong-ni,Oksŏng-ni,ogseongli,옥성리 | South Korea, Jeollabuk-do Gimje-si > Geumgu-myeon | locality | N 35° 47′ 9'' | E 127° 0′ 3'' |
| 3836 | Oksil-li Gyokuhitsu-Ri,Gyokushitsu-ri,Oksil-li,Oksol-li,Oksul-li,Oksŏl-li,Oksŭl-li,Wangsul-li,Wangsŭl-li | South Korea, Jeollanam-do Yeonggwang-gun > Yeomsan-myeon | populated place | N 35° 10′ 15'' | E 126° 22′ 12'' |
| 3837 | Oksan Oksan,ogsan,옥산 | South Korea, Gyeongsangbuk-do Uljin County | locality | N 36° 59′ 9'' | E 129° 14′ 17'' |
| 3838 | Oksal-li Gyokusan-do,Gyokusan-dō,Gyokuzando,Gyokuzandō,Ogsan,Oksal-li,Oksan,Oksan-dong,ogsanli,옥산리 | South Korea, Gyeongsangbuk-do Sangju-si > Gongseong-myeon | populated place | N 36° 17′ 0'' | E 128° 5′ 33'' |
| 3839 | Okp’yŏng-ni Okp'yong-ni,Okp’yŏng-ni,ogpyeongli,옥평리 | South Korea, Jeollanam-do Boseong-gun > Miryeok-myeon | locality | N 34° 45′ 50'' | E 127° 6′ 53'' |
| 3840 | Okgye Okgye,Okkae-ri,Okkye,Okkye-ri,oggye,옥계 | South Korea, Chungcheongnam-do Boryeong-si > Cheongna-myeon | populated place | N 36° 24′ 5'' | E 126° 37′ 50'' |
| 3841 | Okkŭm-ni Okkum-ni,Okkŭm-ni,oggeumli,옥금리 | South Korea, Chungcheongnam-do Dangjin-si | locality | N 36° 46′ 44'' | E 126° 48′ 55'' |
| 3842 | Okgudo Gyokuki-To,Gyokuki-Tō,Gyokuko-to,Gyokukō-tō,Okgudo,Okku-do,Okkwi-do,oggudo,옥구도 | South Korea, Gyeonggi-do | land-tied island | N 37° 21′ 21'' | E 126° 42′ 40'' |
| 3843 | Okho-ri Okho-ri,ogholi,옥호리 | South Korea, Jeollanam-do Hwasun-gun > Dong-myeon | locality | N 34° 59′ 40'' | E 127° 1′ 43'' |
| 3844 | Okcheolli Okch'ol-li,Okch'on-ni,Okcheolli,Okch’ŏl-li,Okch’ŏn-ni,ogcheonli,옥천리 | South Korea, Gyeonggi-do Yangpyeong-gun > Okcheon-myeon | populated place | N 37° 31′ 12'' | E 127° 27′ 37'' |
| 3845 | Okchŏng-ni Okchong-ni,Okchŏng-ni,ogjeongli,옥정리 | South Korea, Jeollabuk-do Imsil-gun > Gangjin-myeon | locality | N 35° 33′ 6'' | E 127° 5′ 44'' |
| 3846 | Ojang Ojang,Ojang-dong,ojang,오장 | South Korea, Gyeongsangnam-do Goseong-gun > Georyu-myeon | populated place | N 34° 58′ 20'' | E 128° 26′ 28'' |
| 3847 | Ohang-ni Ohang-ni,ohangli,오항리 | South Korea, Gangwon-do Chuncheon-si > Buksan-myeon | locality | N 37° 59′ 22'' | E 127° 52′ 23'' |
| 3848 | Ohang-ni Ohang-ni,ohangli,오항리 | South Korea, Chungcheongnam-do Geumsan-gun > Jinsan-myeon | locality | N 36° 6′ 4'' | E 127° 22′ 28'' |
| 3849 | Ogeumcheolli Och'ol-li,Ogeumcheolli,Ogumch'on,Ogumch'on-ni,Ogŭmch’ŏn,Ogŭmch’ŏn-ni,ogeumcheon,ogeumcheonli,Ŏch’ŏl-... | South Korea, Gangwon-do Goseong-gun > Ganseong-eup | populated place | N 38° 21′ 50'' | E 128° 25′ 52'' |
| 3850 | Eogumal Eogumal,Ogu-mal,Oguch'on,Ogumai,Okoson,Okōson,eogumal,Ŏgu-mal,Ŏguch’on,Ŏgumai,어구말 | South Korea, Gangwon-do Hongcheon-gun > Duchon-myeon | populated place | N 37° 54′ 28'' | E 128° 2′ 32'' |
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