| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Obdrup Gard | city | Denmark | 56.33 | 10.75 | 49 | 2653 | |
| Odder | city | Denmark | 55.97 | 10.17 | 32 | 20450 | |
| Odum | city | Denmark | 56.32 | 10.13 | 200 | 11512 | |
| Oerne | city | Denmark | 56.15 | 10.68 | 6 | 4197 | |
| Ogstrup | city | Denmark | 56.32 | 10.22 | 213 | 6573 | |
| Ogstrup Gaard | city | Denmark | 56.32 | 10.22 | 213 | 6573 | |
| Oksenmolle | city | Denmark | 56.28 | 10.70 | 65 | 3113 | |
| Oldrup | city | Denmark | 55.93 | 10.08 | 82 | 2038 | |
| Olst | city | Denmark | 56.38 | 10.10 | 124 | 9989 | |
| Olsted | city | Denmark | 56.23 | 10.15 | 246 | 42812 | |
| Ommestrup | city | Denmark | 56.33 | 10.40 | 137 | 5324 | |
| Ondrup | city | Denmark | 55.95 | 10.13 | 111 | 13255 | |
| Onsbierg | city | Denmark | 55.85 | 10.58 | 45 | 1909 | |
| Onsbjaerg | city | Denmark | 55.85 | 10.58 | 45 | 1909 | |
| Onsbjerg | city | Denmark | 55.85 | 10.58 | 45 | 1909 | |
| Onsbjærg | city | Denmark | 55.85 | 10.58 | 45 | 1909 | |
| Onsted | city | Denmark | 56.02 | 10.08 | 282 | 13329 | |
| Opdrup Gaard | city | Denmark | 56.33 | 10.75 | 49 | 2653 | |
| Orbaek | city | Denmark | 56.43 | 10.70 | 98 | 2001 | |
| Orby | city | Denmark | 56.12 | 10.52 | 164 | 745 | |
| Orby | city | Denmark | 55.80 | 10.60 | 19 | 1963 | |
| Ormslev | city | Denmark | 56.13 | 10.07 | 180 | 45845 | |
| Orrild | city | Denmark | 56.53 | 9.88 | 134 | 3428 | |
| Orsted | city | Denmark | 56.50 | 10.35 | 49 | 3102 | |
| Orting | city | Denmark | 55.93 | 10.15 | 82 | 8266 | |
| Orum | city | Denmark | 56.45 | 10.68 | 108 | 1904 | |
| Orumgaard | city | Denmark | 56.40 | 9.97 | 157 | 10721 | |
| Orumgard | city | Denmark | 56.40 | 9.97 | 157 | 10721 | |
| Orup | city | Denmark | 56.32 | 10.75 | 131 | 2574 | |
| Oster Alling | city | Denmark | 56.42 | 10.32 | 39 | 4218 | |
| Oster Bjaergegrav | city | Denmark | 56.48 | 9.92 | 134 | 11040 | |
| Oster Bjerregrav | city | Denmark | 56.48 | 9.92 | 134 | 11040 | |
| Oster Bording | city | Denmark | 56.18 | 9.50 | 170 | 18905 | |
| Oster Christianshoj | city | Denmark | 56.22 | 9.38 | 269 | 5046 | |
| Oster Kejlstrup | city | Denmark | 56.18 | 9.58 | 121 | 26297 | |
| Oster Kondrup | city | Denmark | 56.63 | 10.15 | 98 | 1882 | |
| Oster Kristianshoj | city | Denmark | 56.22 | 9.38 | 269 | 5046 | |
| Oster Torslev | city | Denmark | 56.57 | 10.20 | 13 | 1493 | |
| Oster Velling | city | Denmark | 56.43 | 9.87 | 26 | 3952 | |
| Osterballe | city | Denmark | 56.32 | 10.85 | 32 | 2397 | |
| Osterby | city | Denmark | 55.87 | 10.62 | 16 | 1598 | |
| Osterby | city | Denmark | 56.08 | 10.15 | 196 | 47415 | |
| Ostergaarde | city | Denmark | 55.93 | 10.17 | 72 | 7880 | |
| Ostergard | city | Denmark | 56.38 | 9.90 | 88 | 3970 | |
| Ostergard | city | Denmark | 56.50 | 10.62 | 98 | 1362 | |
| Ostergarde | city | Denmark | 55.93 | 10.17 | 72 | 7880 | |
| Ostermark | city | Denmark | 55.97 | 10.58 | 0 | 790 | |
| Ostervang | city | Denmark | 56.55 | 9.95 | 121 | 4887 | |
| Ostrup | city | Denmark | 56.35 | 10.23 | 170 | 3202 | |
| Ostrup | city | Denmark | 56.50 | 10.18 | 68 | 3370 | |
| Oudrup Gaard | city | Denmark | 55.93 | 10.03 | 246 | 1921 | |
| Oustrup | city | Denmark | 56.40 | 10.33 | 118 | 3890 | |
| Ovdrup | city | Denmark | 55.93 | 10.03 | 246 | 1921 | |
| Ovdrup Gaard | city | Denmark | 55.93 | 10.03 | 246 | 1921 | |
| Over Flojstrup | city | Denmark | 56.07 | 10.25 | 3 | 22071 | |
| Over Fløjstrup | city | Denmark | 56.07 | 10.25 | 3 | 22071 | |
| Over Fussing | city | Denmark | 56.48 | 9.90 | 173 | 7541 | |
| Over Hadsten | city | Denmark | 56.32 | 10.05 | 173 | 8907 | |
| Over Hornbaek | city | Denmark | 56.47 | 9.95 | 134 | 19527 | |
| Over Hornbæk | city | Denmark | 56.47 | 9.95 | 134 | 19527 | |
| Over Lojstrup | city | Denmark | 56.38 | 9.93 | 177 | 4137 | |
| Over Løjstrup | city | Denmark | 56.38 | 9.93 | 177 | 4137 | |
| Over Randlev | city | Denmark | 55.95 | 10.20 | 52 | 10139 | |
| Over Randrup | city | Denmark | 56.58 | 9.97 | 118 | 2977 | |
| Over Romalt | city | Denmark | 56.45 | 10.10 | 78 | 26283 | |
| Overbroen | city | Denmark | 56.45 | 10.68 | 108 | 1904 | |
| Ovstrup | city | Denmark | 56.40 | 10.33 | 118 | 3890 |