Regions of South Korea
- Ognyeo Bong
- Ognyeo Bong
- Ongnyŏ-bong
- Ongnam-dong
- Ongmyŏng
- Ongmasan
- Ongma-ri
- Ongni-san
- Ongjŏm
- Oeongchi
- Eundongje
- Ongdo
- Ungcheoncheon
- Ongch’ŏn-dong
- Ongcheon
- Chugam-ni
- Ongam
- Ongam
- Ondong
- Ondong
- Ondeok
- Onch’ŏn-ni
- Onsen-ri
- Onsen-ri
- Onch’ŏn 1-tong
- Onch’ŏn-dong
- Ŏnbyori-ri
- Onam-dong
- Ŏnam-ni
- Onamni
- Amsu-dong
- Panpopogu
- Eomsanggol
- Omong-ni
- Omokch’ŏn-ni
- Omokcheon
- Omokchŏm
- Ŏmmok-tong
- Omi-ri
- Amhyeolli
- Omgogae
- Ŏmgung-dong
- Eomgogae
- Oma-ri
- Ŏmae
- Ŏkusu
- Okto-ri
- Oktong-ni
- Oktong-ch’ŏn
- Odong
- Okdong
- Ok-tong
- Ok-tong
- Ok-tong
- Ok-tong
- Oktong-ni
- Ok-tong
- Okto-ri
- Ok-to
- Ok-to
- Okdo
- Oktang-ni
- Ŏktae-ri
- Oktae-ri
- Oksuam
- Oksŏng-ni
- Oksŏng-ni
- Oksŏng-ni
- Ok-tong
- Ok-to
- Oksil-li
- Oksil-li
- Oksan-ni
- Oksan-ni
- Oksan
- Oksan-ni
- Oksan-myeon
- Oksandong
- Oksan-dong
- Oksan-dong
- Oksal-li
- Oksan
- Oksal-li
- Oksal-li
- Ok-san
- Oksan
- Okp’yŏng-ni
- Okpung-ni
- Eokbulsan
- Okp’o-ri
- Oku Po
- Okp’o-dong
- Ŏkkyo-dong
- Okkye-ri
- Okkye-ri
- Okgye-myeon
- Okkye
- Okgye
- Okgye
- Okkwa-ch’ŏn
- Okkwa-ri
- Okkŭm-ni
- Okkŭm
- Okgudo
- Okku
- Okkol-li
- Okkong-ni
- Ok-kol
- Otgol
- Okgildong
- Okgangni
- Okhyŏl-li
- Okhyŏn-ni
- Okhwa-dong
- Okho-ri
- Okho
- Okchuk-tong
- Okchŏl-li
- Okcheolli
- Okcheon-gun
- Okchŏng-ni
- Okchŏng-ni
- Okchŏng
- Okcheon
- Ong-ni
- Okchi
- Okcha
- Chori’p’o
- Ŏjŏl-li
- Ŏjŏn-dong
- Ojŏn
- Eojeon
- Ŏjisil
- Oji-ri
- Oji-ri
- Sanjing-ni
- Ojiam-gi
- Oji-ri
- Ŏja
- Ojang
- Ŏjae
- Ŏil-li
- Origol
- Oido
- Oido
- Oi
- Ohyŏngje-do
- Eohwa
- Oho-ri
- Oho-ri
- Ohang-ni
- Ohang-ni
- Ohang-ni
- Ohang-dong
- Ogyong-dong
- Ŏgyŏng
- Ogye-ri
- Ogya-ri
- Ogyang-bong
- Ogwŏl-li
- Gyokan-ri
- Ŏgu-ri
- Ogeumdong
- Ogŭm-ni
- Ogeumcheolli
- Eogumal
- Ogong-ni
- Ogong-ni
- Ogong-ni
- Ogong-ni
- Ogok-to
- Ogok
- Ogok
- Ŏgong-ni
- Ogok
- Ogil
- Oga-ri
- Oga-ri
- Ogapsan
- Oga-dong
- Oiyonu Group
- Oeongchiri
- Oiyonu To Anchorage
- Ŏeyŏndo
- Waiyan Do
- Oeye-ri
- Oeyang
- Oeyaksadong
- Oeumok-to
- Sa-ri
- Oesuip
- Oesŏnmi-ri
- Oesŏngsan
- Oesŏng
- Oesong
- Oesong
- Cheongpyeong-myeon
- Gaisei-sen
- Oesa-ri
- Oesal-li