Alphabetical listing of Places in Sor-Trondelag
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Oddan | city | Sor-Trondelag | Norway | 63.37 | 9.15 | 0 | 91 |
| Odden | city | Sor-Trondelag | Norway | 63.37 | 9.15 | 0 | 91 |
| Oddstolen | city | Sor-Trondelag | Norway | 63.38 | 9.15 | 3 | 60 |
| Oddstølen | city | Sor-Trondelag | Norway | 63.38 | 9.15 | 3 | 60 |
| Odstolen | city | Sor-Trondelag | Norway | 63.38 | 9.15 | 3 | 60 |
| Odstølen | city | Sor-Trondelag | Norway | 63.38 | 9.15 | 3 | 60 |
| Oen | city | Sor-Trondelag | Norway | 63.65 | 8.70 | 9 | 260 |
| Oian | city | Sor-Trondelag | Norway | 63.75 | 10.25 | 1049 | 596 |
| Oiavold | city | Sor-Trondelag | Norway | 62.78 | 10.92 | 2887 | 100 |
| Oiavoll | city | Sor-Trondelag | Norway | 62.78 | 10.92 | 2887 | 100 |
| Oien | city | Sor-Trondelag | Norway | 63.72 | 9.53 | 0 | 35 |
| Oien | city | Sor-Trondelag | Norway | 62.52 | 11.93 | 2509 | 149 |
| Okdal | city | Sor-Trondelag | Norway | 62.92 | 10.37 | 1771 | 0 |
| Okgarden | city | Sor-Trondelag | Norway | 63.77 | 9.78 | 9 | 1879 |
| Oksbaasen | city | Sor-Trondelag | Norway | 63.28 | 9.90 | 1115 | 1988 |
| Oksbåsen | city | Sor-Trondelag | Norway | 63.28 | 9.90 | 1115 | 1988 |
| Oksevik | city | Sor-Trondelag | Norway | 63.75 | 8.63 | 9 | 482 |
| Oksvolden | city | Sor-Trondelag | Norway | 63.82 | 9.68 | 65 | 197 |
| Oksvoll | city | Sor-Trondelag | Norway | 63.82 | 9.68 | 65 | 197 |
| Olbu | city | Sor-Trondelag | Norway | 62.62 | 9.50 | 1922 | 265 |
| Olbusaetra | city | Sor-Trondelag | Norway | 62.45 | 10.05 | 3349 | 126 |
| Olbusætra | city | Sor-Trondelag | Norway | 62.45 | 10.05 | 3349 | 126 |
| Olden | city | Sor-Trondelag | Norway | 63.87 | 9.93 | 131 | 664 |
| Oldero | city | Sor-Trondelag | Norway | 63.57 | 8.43 | 0 | 113 |
| Olderoy | city | Sor-Trondelag | Norway | 63.57 | 8.43 | 0 | 113 |
| Oldervik | city | Sor-Trondelag | Norway | 63.60 | 8.98 | 0 | 596 |
| Olderøy | city | Sor-Trondelag | Norway | 63.57 | 8.43 | 0 | 113 |
| Olsholm | city | Sor-Trondelag | Norway | 63.32 | 10.15 | 9 | 5455 |
| Olsholme | city | Sor-Trondelag | Norway | 63.32 | 10.15 | 9 | 5455 |
| Olstran | city | Sor-Trondelag | Norway | 63.48 | 9.78 | 830 | 497 |
| Olstren | city | Sor-Trondelag | Norway | 63.48 | 9.78 | 830 | 497 |
| Olsvik | city | Sor-Trondelag | Norway | 63.48 | 8.93 | 0 | 105 |
| Olsvik | city | Sor-Trondelag | Norway | 63.80 | 9.65 | 328 | 188 |
| Olsvik | city | Sor-Trondelag | Norway | 63.24 | 8.39 | 196 | 243 |
| Olsvika | city | Sor-Trondelag | Norway | 63.80 | 9.65 | 328 | 188 |
| Olvika | city | Sor-Trondelag | Norway | 64.18 | 10.38 | 830 | 139 |
| Ommunddal | city | Sor-Trondelag | Norway | 63.95 | 10.57 | 1669 | 149 |
| Opdal | city | Sor-Trondelag | Norway | 62.60 | 9.67 | 1778 | 1602 |
| Ophaug | city | Sor-Trondelag | Norway | 63.73 | 9.70 | 65 | 2849 |
| Opland | city | Sor-Trondelag | Norway | 63.38 | 10.17 | 830 | 19861 |
| Opoien | city | Sor-Trondelag | Norway | 63.17 | 9.68 | 393 | 943 |
| Oppdal | city | Sor-Trondelag | Norway | 62.60 | 9.67 | 1778 | 1602 |
| Oppdal kommune | city | Sor-Trondelag | Norway | 62.60 | 9.67 | 1778 | 1602 |
| Oppdali vald | city | Sor-Trondelag | Norway | 62.60 | 9.67 | 1778 | 1602 |
| Oppdals kommun | city | Sor-Trondelag | Norway | 62.60 | 9.67 | 1778 | 1602 |
| Opphaug | city | Sor-Trondelag | Norway | 63.73 | 9.70 | 65 | 2849 |
| Oppland | city | Sor-Trondelag | Norway | 63.38 | 10.17 | 830 | 19861 |
| Oppsal | city | Sor-Trondelag | Norway | 63.18 | 8.88 | 1669 | 141 |
| Opsal | city | Sor-Trondelag | Norway | 63.18 | 8.88 | 1669 | 141 |
| Opøien | city | Sor-Trondelag | Norway | 63.17 | 9.68 | 393 | 943 |
| Or | city | Sor-Trondelag | Norway | 63.50 | 10.05 | 328 | 358 |
| Oraas | city | Sor-Trondelag | Norway | 63.15 | 11.27 | 1771 | 149 |
| Oranestad | city | Sor-Trondelag | Norway | 63.40 | 9.48 | 0 | 137 |
| Oras | city | Sor-Trondelag | Norway | 63.15 | 11.27 | 1771 | 149 |
| Oraunestad | city | Sor-Trondelag | Norway | 63.40 | 9.48 | 0 | 137 |
| Oren | city | Sor-Trondelag | Norway | 63.50 | 10.05 | 328 | 358 |
| Orkanger | city | Sor-Trondelag | Norway | 63.32 | 9.87 | 830 | 1830 |
| Ormhaugen | city | Sor-Trondelag | Norway | 63.25 | 10.15 | 830 | 1241 |
| Orstadsaetra | city | Sor-Trondelag | Norway | 62.57 | 9.58 | 2509 | 718 |
| Orstadseter | city | Sor-Trondelag | Norway | 62.57 | 9.58 | 2509 | 718 |
| Osen | city | Sor-Trondelag | Norway | 64.30 | 10.52 | 328 | 135 |
| Osen | city | Sor-Trondelag | Norway | 62.65 | 9.48 | 2509 | 149 |
| Osen | city | Sor-Trondelag | Norway | 63.93 | 10.30 | 275 | 286 |
| Osoyvollen | city | Sor-Trondelag | Norway | 62.72 | 10.73 | 2929 | 0 |
| Ostby | city | Sor-Trondelag | Norway | 63.05 | 11.67 | 1669 | 0 |
| Osterdalsvolden | city | Sor-Trondelag | Norway | 63.28 | 10.32 | 1181 | 3687 |
| Osterdalsvoll | city | Sor-Trondelag | Norway | 63.28 | 10.32 | 1181 | 3687 |
| Osterdalsvollen | city | Sor-Trondelag | Norway | 63.28 | 10.32 | 1181 | 3687 |
| Ostmarken | city | Sor-Trondelag | Norway | 63.45 | 10.45 | 108 | 10359 |
| Ostraat | city | Sor-Trondelag | Norway | 63.72 | 9.75 | 121 | 2308 |
| Ostrat | city | Sor-Trondelag | Norway | 63.72 | 9.75 | 121 | 2308 |
| Ostvaslien | city | Sor-Trondelag | Norway | 64.20 | 10.72 | 1181 | 149 |
| Osvik | city | Sor-Trondelag | Norway | 64.10 | 10.20 | 3 | 123 |
| Osöivold | city | Sor-Trondelag | Norway | 62.72 | 10.73 | 2929 | 0 |
| Osøyvollen | city | Sor-Trondelag | Norway | 62.72 | 10.73 | 2929 | 0 |
| Ottersbo | city | Sor-Trondelag | Norway | 63.70 | 9.75 | 0 | 1943 |
| Ottersbuen | city | Sor-Trondelag | Norway | 63.70 | 9.75 | 0 | 1943 |
| Overby | city | Sor-Trondelag | Norway | 63.43 | 10.17 | 830 | 16392 |
| Overd | city | Sor-Trondelag | Norway | 64.17 | 10.48 | 830 | 149 |
| Overdal | city | Sor-Trondelag | Norway | 64.17 | 10.48 | 830 | 149 |
| Overland | city | Sor-Trondelag | Norway | 63.63 | 10.15 | 830 | 538 |
| Overvik | city | Sor-Trondelag | Norway | 63.22 | 10.98 | 830 | 149 |
| Ovre | city | Sor-Trondelag | Norway | 63.47 | 9.83 | 830 | 588 |
| Ovre Aaseg | city | Sor-Trondelag | Norway | 64.25 | 10.70 | 328 | 149 |
| Ovre Asegg | city | Sor-Trondelag | Norway | 64.25 | 10.70 | 328 | 149 |
| Ovre Hanes | city | Sor-Trondelag | Norway | 62.53 | 11.33 | 2647 | 728 |
| Ovre Jervan | city | Sor-Trondelag | Norway | 63.35 | 10.67 | 853 | 10487 |
| Ovre Skardsvag | city | Sor-Trondelag | Norway | 63.68 | 8.68 | 0 | 520 |
| Ovre Tennel | city | Sor-Trondelag | Norway | 63.47 | 9.83 | 830 | 588 |
| Oy | city | Sor-Trondelag | Norway | 63.33 | 10.23 | 45 | 8724 |
| Oya | city | Sor-Trondelag | Norway | 62.52 | 11.93 | 2509 | 149 |
| Oya | city | Sor-Trondelag | Norway | 63.65 | 8.70 | 9 | 260 |
| Oyan | city | Sor-Trondelag | Norway | 63.75 | 10.25 | 1049 | 596 |
| Oyangen | city | Sor-Trondelag | Norway | 63.47 | 9.70 | 830 | 287 |
| Oyavollen | city | Sor-Trondelag | Norway | 62.78 | 10.92 | 2887 | 100 |
| Oye | city | Sor-Trondelag | Norway | 63.33 | 10.23 | 45 | 8724 |
| Oyen | city | Sor-Trondelag | Norway | 63.72 | 9.53 | 0 | 35 |
| Oyesand | city | Sor-Trondelag | Norway | 63.33 | 10.23 | 45 | 8724 |
| Oysandan | city | Sor-Trondelag | Norway | 63.32 | 10.23 | 830 | 6594 |
| Oyum | city | Sor-Trondelag | Norway | 63.20 | 9.80 | 830 | 2000 |
| Oyvollen | city | Sor-Trondelag | Norway | 63.10 | 11.70 | 1814 | 0 |
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