1. O Syo (37.5N, 126.31E) Inch'on-gwangyoksi, Island 2. O To (36.2N, 126.05E) Ch'ungch'ong-namdo, Island 3. O-am (34.66N, 125.97E) Cholla-namdo, Rock 4. O-do (34.57N, 127.4E) , Island 5. O-do (34.72N, 127.38E) , Island 6. O-do (36.15N, 129.42E) Kyongsang-bukto, Rock 7. O-do (34.94N, 125.96E) Cholla-namdo, Island 8. O-do (36.2N, 126.05E) Ch'ungch'ong-namdo, Island 9. O-do (36.34N, 126.27E) Ch'ungch'ong-namdo, Island 10. O-do (34.29N, 126.48E) Cholla-namdo, Island 11. O-do (34.81N, 126.34E) Cholla-namdo, Island 12. O-do (34.65N, 126.25E) Cholla-namdo, Island 13. O-do (35.33N, 126E) Cholla-namdo, Island 14. O-do (37.19N, 125.91E) Inch'on-gwangyoksi, Island 15. O-do (37.25N, 126.65E) Kyonggi-do, Island 16. O-do (34.58N, 125.91E) Cholla-namdo, Island 17. O-do (34.68N, 127.68E) Cholla-namdo, Island 18. O-do (37.06N, 125.99E) Inch'on-gwangyoksi, Island 19. O-do (37.2N, 126.38E) Inch'on-gwangyoksi, Island 20. O-dong (34.82N, 127.05E) , Populated Place 21. O-dong (35.55N, 127.3E) , Populated Place 22. O-dong (35.2N, 128.32E) Kyongsang-namdo, Populated Place 23. O-ri (36.22N, 127.32E) Taejon-gwangyoksi, Locality 24. O-ri (34.65N, 127.38E) , Populated Place 25. O-ri (34.72N, 125.47E) Cholla-namdo, Populated Place 26. O-ri (35.37N, 129.27E) Pusan-gwangyoksi, Populated Place 27. O-ri (35.68N, 128.37E) Taegu-gwangyoksi, Populated Place 28. O-ri (34.9N, 126.97E) Cholla-namdo, Populated Place 29. O-sho (37.5N, 126.31E) Inch'on-gwangyoksi, Island 30. O-som (37.07N, 125.94E) Inch'on-gwangyoksi, Island 31. O-som (34.72N, 127.38E) , Island 32. O-som (37.25N, 126.65E) Kyonggi-do, Island 33. O-to (34.68N, 127.68E) Cholla-namdo, Island 34. O-to (36.65N, 126.01E) Ch'ungch'ong-namdo, Island 35. O-to (35.34N, 125.99E) Cholla-namdo, Island 36. Oa-do (34.94N, 127.86E) Kyongsang-namdo, Island 37. Oaebeng-ni (34.7N, 127.43E) , Populated Place 38. Oaeno-ri (34.68N, 127.33E) , Populated Place 39. Oaeo-ri (35.77N, 127.5E) , Populated Place 40. Oaesan-dong (36.03N, 127.05E) Cholla-bukto, Populated Place | 41. Oam-ni (35.57N, 127.31E) Cholla-bukto, Populated Place 42. Obang (34.93N, 128.18E) Kyongsang-namdo, Populated Place 43. Obang (35.41N, 128.33E) Kyongsang-namdo, Populated Place 44. Obang-dong (37.1N, 127.43E) Kyonggi-do, Populated Place 45. Obang-ni (37.1N, 127.43E) Kyonggi-do, Populated Place 46. Obang-ni (34.93N, 128.18E) Kyongsang-namdo, Populated Place 47. Obang-ni (35.41N, 128.33E) Kyongsang-namdo, Populated Place 48. Obeto (37.19N, 125.98E) Inch'on-gwangyoksi, Island 49. Obi-do (34.82N, 128.36E) Kyongsang-namdo, Island 50. Obi-ri (34.92N, 128.62E) , Populated Place 51. Obi-som (34.82N, 128.36E) Kyongsang-namdo, Island 52. Obon-ni (36.33N, 126.83E) Ch'ungch'ong-namdo, Locality 53. Obong (35.65N, 128.92E) Kyongsang-bukto, Populated Place 54. Obong (35.39N, 127.77E) Kyongsang-namdo, Populated Place 55. Obong (35.89N, 126.73E) Cholla-bukto, Populated Place 56. Obong-dong (35.65N, 128.92E) Kyongsang-bukto, Populated Place 57. Obong-je (36.87N, 126.74E) Ch'ungch'ong-namdo, Reservoir(s) 58. Obong-ni (36.6N, 126.62E) Ch'ungch'ong-namdo, Locality 59. Obong-ni (35.28N, 126.98E) , Populated Place 60. Obong-ni (38.33N, 128.47E) Kangwon-do, Populated Place 61. Obong-ni (36.59N, 126.6E) Ch'ungch'ong-namdo, Populated Place 62. Obong-ni (34.72N, 126.52E) Cholla-namdo, Populated Place 63. Obong-ni (35.78N, 127.55E) Cholla-bukto, Populated Place 64. Obong-ni (35.63N, 127.35E) Cholla-bukto, Populated Place 65. Obong-ni (37.71N, 128.82E) Kangwon-do, Populated Place 66. Obong-ni (34.92N, 126.75E) Cholla-namdo, Populated Place 67. Obong-ni (34.76N, 127.17E) Cholla-namdo, Populated Place 68. Obong-ni (35.65N, 128.92E) Kyongsang-bukto, Populated Place 69. Obong-ni (35.39N, 127.77E) Kyongsang-namdo, Populated Place 70. Obong-san (34.9N, 127.37E) , Mountain 71. Obong-san (35.64N, 127.13E) Cholla-bukto, Mountain 72. Obong-san (35.53N, 128.65E) Kyongsang-namdo, Mountain 73. Obongjong (36.71N, 127.98E) Kyongsang-bukto, Populated Place 74. Obongsan (37.82N, 126.82E) Kyonggi-do, Populated Place 75. Observation Island (35.66N, 126.14E) Cholla-bukto, Island 76. Observatory Island (34.03N, 127.32E) Cholla-namdo, Island 77. Observatory Island (34.63N, 128.26E) Kyongsang-namdo, Island 78. Observatory Island (35.11N, 128.67E) Kyongsang-namdo, Island 79. Obul-to (34.34N, 126.47E) Cholla-namdo, Island 80. Obunaegi-som (34.37N, 127.2E) Cholla-namdo, Island |