ABCDGHIJKMNOPSTUWY O O-dong Oam Obok Obong Och’ŏl-li Och’ŏn Odŏk-sa Oe-maŭl Oeannal Oebaebang Oebuk Oebukch’ang Oech’ŏsa-dong Oedusil Oegi Oegok Oehusa Oei-ri Oemok Oerim Oeryang Oesan Oesong Oesŏngsan Oeyodae Oeyul Ogat Ogong Oji-ri Okcha-dong Okchŏng Okch’ŏn-am Okguyeok Okhŭng Okkol-li Okku Okpae Okpong-ni Okp’o-ri Oksal-li Oksam Oksan Oksan-dong Okso-gol Oksŏng Okt’aeng-ni Omae Omongnae Ongjeongriyeok Ongjŏng-ni Onp’aengi Onsu-dong Oryong-dong Oryuyeok Osan Osanyeok Osikto-dong Osil-li Osuyeok Osŏng Ŏch’i-ri Ŏch’ŏngdo-ri Ŏja Ŏmmok Ŏndong-ni Ŏn’gŏn Ŏŏn-dong Ŏŭl-li Ŏŭn ABCDGHIJKMNOPSTUWY