| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Um-ch'on | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8077778 | 126.4372222 | 232 | 46434 |
| Um-ch'on | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 37.0469444 | 127.5958333 | 269 | 30054 |
| Um-dong | city | Taegu-gwangyoksi | Korea, Republic of (South) | 35.7 | 128.4833333 | 731 | 18018 |
| Um-gol | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.4833333 | 126.8333333 | 91 | 596056 |
| Um-kol | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.4833333 | 126.8333333 | 91 | 596056 |
| Um-ni | city | Cholla-namdo | Korea, Republic of (South) | 34.7836111 | 126.1425 | 26 | 8509 |
| Um-ni | city | Cholla-namdo | Korea, Republic of (South) | 34.1755556 | 126.8691667 | 49 | 4789 |
| Um-ni | city | Ulsan-gwangyoksi | Korea, Republic of (South) | 35.6408333 | 129.3886111 | 777 | 24076 |
| Umaegi | city | Cholla-namdo | Korea, Republic of (South) | 34.9525 | 126.9794444 | 331 | 21322 |
| Umanae-ri | city | Taejon-gwangyoksi | Korea, Republic of (South) | 36.3666667 | 127.4166667 | 170 | 299257 |
| Umang | city | Kyongsang-bukto | Korea, Republic of (South) | 36.5427778 | 128.3213889 | 246 | 17577 |
| Umang-gol | city | Kyongsang-bukto | Korea, Republic of (South) | 36.5427778 | 128.3213889 | 246 | 17577 |
| Umang-ni | city | Kyongsang-bukto | Korea, Republic of (South) | 36.5427778 | 128.3213889 | 246 | 17577 |
| Umbu-dong | city | Cheju-do | Korea, Republic of (South) | 33.35 | 126.2666667 | 419 | 32038 |
| Umch'on | city | Kyongsang-namdo | Korea, Republic of (South) | 35.2 | 128.45 | 534 | 42203 |
| Umch'on-mal | city | Kyonggi-do | Korea, Republic of (South) | 37.7680556 | 126.7963889 | 101 | 89926 |
| Umchugumnae | city | Kyonggi-do | Korea, Republic of (South) | 37.1411111 | 127.5733333 | 291 | 82884 |
| Umdae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0230556 | 127.5063889 | 561 | 27155 |
| Umdae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0230556 | 127.5063889 | 561 | 27155 |
| Umdal | city | Kyongsang-bukto | Korea, Republic of (South) | 36.795 | 128.3791667 | 2099 | 20735 |
| Umdal-li | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5666667 | 126.9333333 | 137 | 1771161 |
| Umdal-mal | city | Kyonggi-do | Korea, Republic of (South) | 37.8325 | 126.8794444 | 515 | 89874 |
| Umdal-mal | city | Kangwon-do | Korea, Republic of (South) | 37.6775 | 127.6661111 | 534 | 9321 |
| Umdal-mal | city | Kangwon-do | Korea, Republic of (South) | 37.4413889 | 128.0891667 | 938 | 9350 |
| Umdalma | city | Kyongsang-bukto | Korea, Republic of (South) | 36 | 128.55 | 314 | 334392 |
| Umgogae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.85 | 126.6666667 | 462 | 26656 |
| Umgondae | city | Kyongsang-bukto | Korea, Republic of (South) | 36.5 | 128.3666667 | 816 | 17595 |
| Umgong-ni | city | Cholla-namdo | Korea, Republic of (South) | 34.7619444 | 126.5347222 | 42 | 13931 |
| Umhae-dong | city | Kyongsang-bukto | Korea, Republic of (South) | 37.0263889 | 129.4044444 | 0 | 6458 |
| Umhanch'on | city | Kyongsang-bukto | Korea, Republic of (South) | 36.8841667 | 129.2630556 | 1020 | 9419 |
| Umi-dong | city | Kangwon-do | Korea, Republic of (South) | 38.2772222 | 127.1605556 | 567 | 10626 |
| Umjamaul | city | Kyongsang-bukto | Korea, Republic of (South) | 35.75 | 128.2166667 | 561 | 22170 |
| Umji | city | Kangwon-do | Korea, Republic of (South) | 38.2166667 | 128.2166667 | 1456 | 9252 |
| Umji | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 36.975 | 128.4080556 | 1020 | 22089 |
| Umji | city | Kyongsang-bukto | Korea, Republic of (South) | 36.3 | 128.7833333 | 551 | 17634 |
| Umji-ch'on | city | Kangwon-do | Korea, Republic of (South) | 38.1333333 | 127.4166667 | 1945 | 9262 |
| Umji-ch'on | city | Kangwon-do | Korea, Republic of (South) | 37.1666667 | 129.35 | 0 | 4183 |
| Umji-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4333333 | 126.6166667 | 662 | 25090 |
| Umji-dong | city | Kangwon-do | Korea, Republic of (South) | 37.3166667 | 129.2166667 | 764 | 8340 |
| Umji-mal | city | Kangwon-do | Korea, Republic of (South) | 38.1333333 | 127.4166667 | 1945 | 9262 |
| Umji-mal | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 36.8688889 | 128.1525 | 1148 | 22102 |
| Umji-mal | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 36.975 | 128.4080556 | 1020 | 22089 |
| Umji-mal | city | Kangwon-do | Korea, Republic of (South) | 37.8286111 | 128.8416667 | 13 | 7008 |
| Umji-mal | city | Kangwon-do | Korea, Republic of (South) | 37.2166667 | 129.0333333 | 1095 | 9378 |
| Umji-maul | city | Kangwon-do | Korea, Republic of (South) | 38.1333333 | 127.4166667 | 1945 | 9262 |
| Umji-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4333333 | 126.6166667 | 662 | 25090 |
| Umjibat'tul | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1166667 | 127.4833333 | 554 | 26913 |
| Umjich'on | city | Kangwon-do | Korea, Republic of (South) | 38.2166667 | 128.2166667 | 1456 | 9252 |
| Umjijuam | city | Kyongsang-namdo | Korea, Republic of (South) | 35.5833333 | 127.75 | 859 | 42007 |
| Umjima | city | Kyongsang-bukto | Korea, Republic of (South) | 35.75 | 128.2166667 | 561 | 22170 |
| Umjimal | city | Kyongsang-bukto | Korea, Republic of (South) | 36 | 127.9333333 | 1125 | 19934 |
| Umjimal | city | Kangwon-do | Korea, Republic of (South) | 37.3166667 | 129.2166667 | 764 | 8340 |
| Umjimal | city | Kangwon-do | Korea, Republic of (South) | 37.1488889 | 129.3286111 | 321 | 8345 |
| Umjimal | city | Kangwon-do | Korea, Republic of (South) | 37.1666667 | 129.35 | 0 | 4183 |
| Umjinogyong | city | Kangwon-do | Korea, Republic of (South) | 37.1488889 | 129.3286111 | 321 | 8345 |
| Umjom | city | Kyongsang-namdo | Korea, Republic of (South) | 34.7852778 | 128.0502778 | 3 | 17391 |
| Umjomot | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.39 | 127.069444 | 65 | 35487 |
| Umjon-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1166667 | 127.4833333 | 554 | 26913 |
| Umnae | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5666667 | 126.85 | 52 | 1153575 |
| Umnae | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.45 | 126.9 | 91 | 879730 |
| Umnae | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.45 | 126.9166667 | 698 | 1135244 |
| Umnae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.775 | 126.9327778 | 164 | 26501 |
| Umnae | city | Kyonggi-do | Korea, Republic of (South) | 37.95 | 126.9333333 | 357 | 89723 |
| Umnae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.2763889 | 127.1283333 | 108 | 26853 |
| Umnae | city | Taejon-gwangyoksi | Korea, Republic of (South) | 36.3666667 | 127.4166667 | 170 | 299257 |
| Umnae | city | Kyongsang-bukto | Korea, Republic of (South) | 36.1041667 | 128.4219444 | 150 | 17680 |
| Umnae-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7572222 | 127.0191667 | 45 | 26684 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7116667 | 126.5466667 | 101 | 26496 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.5258333 | 126.5466667 | 16 | 24256 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3036111 | 126.6091667 | 501 | 25983 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7036111 | 126.6675 | 82 | 26712 |
| Umnae-ri | city | Kyonggi-do | Korea, Republic of (South) | 37.9333333 | 126.75 | 85 | 78358 |
| Umnae-ri | city | | Korea, Republic of (South) | 35.9852778 | 126.8522222 | 91 | 28130 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.775 | 126.9327778 | 164 | 26501 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.2763889 | 127.1283333 | 108 | 26853 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6777778 | 127.2063889 | 167 | 26696 |
| Umnae-ri | city | Cholla-bukto | Korea, Republic of (South) | 35.9741667 | 127.2094444 | 111 | 28137 |
| Umnae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1425 | 127.3666667 | 751 | 26974 |
| Umnae-ri | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 36.7716667 | 127.6377778 | 278 | 22148 |
| Umnae-ri | city | Cholla-bukto | Korea, Republic of (South) | 36.072222 | 127.6613889 | 613 | 23265 |
| Umnae-ri | city | Kyongsang-bukto | Korea, Republic of (South) | 36.9133333 | 128.5786111 | 652 | 17579 |
| Umnae-ri | city | Kyongsang-bukto | Korea, Republic of (South) | 35.8947222 | 129.4961111 | 141 | 16604 |
| Umok | city | Taegu-gwangyoksi | Korea, Republic of (South) | 35.8772222 | 128.4227778 | 183 | 34103 |
| Umpo | city | Cholla-bukto | Korea, Republic of (South) | 35.4383333 | 127.5313889 | 1509 | 28327 |
| Umpō | city | Cholla-bukto | Korea, Republic of (South) | 35.4383333 | 127.5313889 | 1509 | 28327 |
| Umsil | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 37.1619444 | 128.0127778 | 879 | 19715 |
| Umsomi | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9166667 | 126.8 | 19 | 21444 |
| Umsong | city | Ch'ungch'ong-bukto | Korea, Republic of (South) | 36.9352778 | 127.6897222 | 419 | 22100 |
| Umsu-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0666667 | 127.45 | 1194 | 27013 |
| Umsu-gol | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0666667 | 127.45 | 1194 | 27013 |
| Umullek-kol | city | Inch'on-gwangyoksi | Korea, Republic of (South) | 37.8066667 | 126.2575 | 32 | 31310 |
| Umulmok | city | Kyonggi-do | Korea, Republic of (South) | 38.05 | 127.3166667 | 1204 | 62857 |
| Umwol-tong | city | Soul-t'ukpyolsi | Korea, Republic of (South) | 37.5666667 | 126.9333333 | 137 | 1771161 |
| Umyang-dong | city | Kangwon-do | Korea, Republic of (South) | 38 | 128.1 | 574 | 9283 |
| Umyang-ni | city | Kangwon-do | Korea, Republic of (South) | 38 | 128.1 | 574 | 9283 |
| Umyong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6333333 | 126.95 | 626 | 26726 |
| Umyong-ni | city | Kyongsang-namdo | Korea, Republic of (South) | 35.55 | 127.7833333 | 528 | 42007 |
| Umyŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6333333 | 126.95 | 626 | 26726 |
| Umyŏng-ni | city | Kyongsang-namdo | Korea, Republic of (South) | 35.55 | 127.7833333 | 528 | 42007 |