| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onch'ae-ri | city | Korea, Dem. Peoples Rep. of (North) | 38.43 | 125.72 | 13 | 27202 | |
| Onch'ang-ni | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 39.98 | 126.76 | 1843 | 2235 |
| Onch'och'am | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.19 | 126.43 | 830 | 3309 |
| Onch'ol-li | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onch'ol-li | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onch'ol-li | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.24 | 126.66 | 1669 | 3278 |
| Onch'ol-li | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.31 | 125.16 | 190 | 22719 |
| Onch'ol-li | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.35 | 125.53 | 39 | 28163 |
| Onch'ol-li | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.21 | 125.42 | 259 | 24451 |
| Onch'ol-li | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 41.06 | 129.36 | 1122 | 9595 |
| Onch'ol-li | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.86 | 127.06 | 859 | 4330 |
| Onch'ol-li | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.26 | 830 | 24986 |
| Onch'on | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.11 | 125.90 | 318 | 19586 |
| Onch'on | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 39.20 | 126.83 | 1099 | 8321 |
| Onch'on | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 38.88 | 125.23 | 29 | 46338 |
| Onch'on | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.72 | 127.05 | 830 | 5662 |
| Onch'on | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.26 | 830 | 24986 |
| Onch'on-dong | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onch'on-dong | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 40.86 | 129.13 | 830 | 11311 |
| Onch'on-dong | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.35 | 127.03 | 830 | 11473 |
| Onch'on-dong | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.82 | 127.04 | 885 | 5204 |
| Onch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onch'on-dong | city | Jeju | Korea, Republic of (South) | 33.33 | 126.77 | 301 | 10344 |
| Onch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 37.08 | 129.29 | 830 | 4727 |
| Onch'on-dong | city | Chungnam | Korea, Republic of (South) | 36.71 | 126.18 | 29 | 5156 |
| Onch'on-dong | city | Chungnam | Korea, Republic of (South) | 36.44 | 126.80 | 830 | 7785 |
| Onch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.72 | 129.34 | 830 | 6705 |
| Onch'on-ni | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onch'on-ni | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 41.00 | 129.22 | 1669 | 11622 |
| Onch'on-ni | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onch'on-ni | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.24 | 126.66 | 1669 | 3278 |
| Onch'on-ni | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.31 | 125.16 | 190 | 22719 |
| Onch'on-ni | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.35 | 125.53 | 39 | 28163 |
| Onch'on-ni | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.21 | 125.42 | 259 | 24451 |
| Onch'on-ni | city | Chungbuk | Korea, Republic of (South) | 36.85 | 127.98 | 830 | 7862 |
| Onch'on-ni | city | Chungnam | Korea, Republic of (South) | 36.78 | 127.02 | 39 | 75247 |
| Onch'on-ni | city | Jeju | Korea, Republic of (South) | 33.33 | 126.77 | 301 | 10344 |
| Onch'on-nodongjiagu | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onch'on-up | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 38.88 | 125.23 | 29 | 46338 |
| Onch'ukch'am | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.16 | 126.45 | 1853 | 3723 |
| Onchalam | city | Andhra Pradesh | India | 18.05 | 82.43 | 2933 | 12627 |
| Onchan | city | Man, Isle of | 54.18 | -4.45 | 150 | 22934 | |
| Onchan | city | West Bengal | India | 22.95 | 88.31 | 39 | 95718 |
| Onchani Kalan | city | Uttar Pradesh | India | 25.68 | 82.64 | 265 | 127680 |
| Onchani Khurd | city | Uttar Pradesh | India | 25.68 | 82.64 | 255 | 131963 |
| Onchargundi | city | Andhra Pradesh | India | 18.12 | 82.58 | 3503 | 13651 |
| Oncheishi | city | Imereti | Georgia | 42.45 | 42.77 | 1669 | 3197 |
| Oncheishi | city | Imereti | Georgia | 42.45 | 42.76 | 1669 | 3233 |
| Oncheon | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.26 | 830 | 24986 |
| Onchesmus | city | Vlore | Albania | 39.88 | 20.01 | 830 | 19414 |
| Onchevi | city | Rach'a-Lechkhumi da Kvemo Svaneti | Georgia | 42.56 | 43.50 | 3736 | 541 |
| Onchevshchina | city | Kirovskaya Oblast' | Russia | 58.65 | 48.80 | 830 | 745 |
| Onchiota | city | New York | United States | 44.49 | -74.12 | 1699 | |
| Onchiyam | city | Kerala | India | 11.65 | 75.59 | 52 | 117493 |
| Onchiyam | city | Kerala | India | 11.65 | 75.59 | 49 | 117493 |
| Oncho Hurgesa | city | Oromiya | Ethiopia | 9.10 | 35.42 | 5229 | 12265 |
| Onchon Airport | airport | 38.91 | 125.23 | 23 | 0 | ||
| Onchon-ri | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onchon-ri | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.24 | 126.66 | 1669 | 3278 |
| Onchon-ri | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 41.06 | 129.36 | 1122 | 9595 |
| Onchong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onchouondjoko | city | Cuvette-Ouest | Congo | 0.07 | 14.23 | 1909 | 447 |
| Onchulu | city | Andhra Pradesh | India | 17.80 | 82.44 | 3349 | 11200 |
| Onchutenki | city | Kostromskaya Oblast' | Russia | 58.96 | 47.55 | 830 | 298 |
| Onchū-dō | city | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.07 | 1020 | 18459 | |
| Onch’ae-ri | city | Korea, Dem. Peoples Rep. of (North) | 38.43 | 125.72 | 13 | 27202 | |
| Onch’ang-ni | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 39.98 | 126.76 | 1843 | 2235 |
| Onch’och’am | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.19 | 126.43 | 830 | 3309 |
| Onch’ukch’am | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.16 | 126.45 | 1853 | 3723 |
| Onch’ŏl-li | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onch’ŏl-li | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onch’ŏl-li | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.24 | 126.66 | 1669 | 3278 |
| Onch’ŏl-li | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.31 | 125.16 | 190 | 22719 |
| Onch’ŏl-li | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.35 | 125.53 | 39 | 28163 |
| Onch’ŏl-li | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.21 | 125.42 | 259 | 24451 |
| Onch’ŏl-li | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 41.06 | 129.36 | 1122 | 9595 |
| Onch’ŏl-li | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.86 | 127.06 | 859 | 4330 |
| Onch’ŏl-li | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.26 | 830 | 24986 |
| Onch’ŏn | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.11 | 125.90 | 318 | 19586 |
| Onch’ŏn | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 39.20 | 126.83 | 1099 | 8321 |
| Onch’ŏn | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 38.88 | 125.23 | 29 | 46338 |
| Onch’ŏn | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.26 | 830 | 24986 |
| Onch’ŏn-dong | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onch’ŏn-dong | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 40.86 | 129.13 | 830 | 11311 |
| Onch’ŏn-dong | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.35 | 127.03 | 830 | 11473 |
| Onch’ŏn-dong | city | Kangwon | Korea, Dem. Peoples Rep. of (North) | 38.82 | 127.04 | 885 | 5204 |
| Onch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onch’ŏn-dong | city | Jeju | Korea, Republic of (South) | 33.33 | 126.77 | 301 | 10344 |
| Onch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 37.08 | 129.29 | 830 | 4727 |
| Onch’ŏn-dong | city | Chungnam | Korea, Republic of (South) | 36.71 | 126.18 | 29 | 5156 |
| Onch’ŏn-dong | city | Chungnam | Korea, Republic of (South) | 36.44 | 126.80 | 830 | 7785 |
| Onch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.72 | 129.34 | 830 | 6705 |
| Onch’ŏn-ni | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 42.00 | 129.31 | 2913 | 7450 |
| Onch’ŏn-ni | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 41.00 | 129.22 | 1669 | 11622 |
| Onch’ŏn-ni | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onch’ŏn-ni | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.24 | 126.66 | 1669 | 3278 |
| Onch’ŏn-ni | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.31 | 125.16 | 190 | 22719 |
| Onch’ŏn-ni | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.35 | 125.53 | 39 | 28163 |
| Onch’ŏn-ni | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.21 | 125.42 | 259 | 24451 |
| Onch’ŏn-ni | city | Chungbuk | Korea, Republic of (South) | 36.85 | 127.98 | 830 | 7862 |
| Onch’ŏn-ni | city | Chungnam | Korea, Republic of (South) | 36.78 | 127.02 | 39 | 75247 |
| Onch’ŏn-ni | city | Jeju | Korea, Republic of (South) | 33.33 | 126.77 | 301 | 10344 |
| Onch’ŏn-nodongjiagu | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onch’ŏn-up | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 38.88 | 125.23 | 29 | 46338 |