| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Obening | city | Denmark | 55.10 | 9.23 | 164 | 2028 | |
| Objaerg | city | Denmark | 55.13 | 8.93 | 68 | 2306 | |
| Objerg | city | Denmark | 55.13 | 8.93 | 68 | 2306 | |
| Oksbol | city | Denmark | 55.25 | 9.43 | 32 | 9907 | |
| Oksbol | city | Denmark | 55.03 | 9.77 | 65 | 8330 | |
| Oksbøl | city | Denmark | 55.03 | 9.77 | 65 | 8330 | |
| Oksbøl | city | Denmark | 55.25 | 9.43 | 32 | 9907 | |
| Oksenvad | city | Denmark | 55.32 | 9.25 | 121 | 3652 | |
| Oksgaard | city | Denmark | 55.10 | 9.18 | 203 | 1998 | |
| Oksgard | city | Denmark | 55.10 | 9.18 | 203 | 1998 | |
| Olufskaer | city | Denmark | 55.22 | 9.57 | 104 | 7171 | |
| Olufskær | city | Denmark | 55.22 | 9.57 | 104 | 7171 | |
| Orby | city | Denmark | 55.30 | 9.65 | 3 | 1365 | |
| Orderup | city | Denmark | 55.20 | 9.10 | 114 | 3304 | |
| Ornum | city | Denmark | 55.03 | 9.58 | 68 | 1176 | |
| Orslev | city | Denmark | 55.08 | 9.18 | 114 | 1987 | |
| Orsted | city | Denmark | 55.35 | 9.25 | 131 | 3435 | |
| Osbaek | city | Denmark | 54.95 | 9.87 | 16 | 16771 | |
| Osby | city | Denmark | 55.25 | 9.65 | 49 | 2565 | |
| Osbæk | city | Denmark | 54.95 | 9.87 | 16 | 16771 | |
| Oster Gammelby | city | Denmark | 55.00 | 8.78 | 42 | 1803 | |
| Oster Gasse | city | Denmark | 55.15 | 8.83 | 42 | 2672 | |
| Oster Gejl | city | Denmark | 54.88 | 9.40 | 131 | 10944 | |
| Oster Hojst | city | Denmark | 55.00 | 9.05 | 55 | 1795 | |
| Oster Lindet | city | Denmark | 55.30 | 9.15 | 85 | 2529 | |
| Oster Logum | city | Denmark | 55.12 | 9.37 | 164 | 5708 | |
| Oster Logum Ostermark | city | Denmark | 55.12 | 9.40 | 164 | 5899 | |
| Oster Snogbaek | city | Denmark | 54.97 | 9.72 | 45 | 7988 | |
| Oster Sottrup | city | Denmark | 54.95 | 9.73 | 32 | 13870 | |
| Oster Terp | city | Denmark | 55.07 | 9.08 | 82 | 1840 | |
| Osterby | city | Denmark | 54.97 | 8.77 | 16 | 2682 | |
| Osterby | city | Denmark | 54.87 | 9.92 | 0 | 1705 | |
| Osterby | city | Denmark | 55.08 | 8.57 | 0 | 270 | |
| Ostergaard | city | Denmark | 55.18 | 9.18 | 131 | 1937 | |
| Ostergaard | city | Denmark | 55.18 | 9.43 | 32 | 3576 | |
| Ostergaards Molle | city | Denmark | 55.18 | 9.43 | 32 | 3576 | |
| Ostergaards Mølle | city | Denmark | 55.18 | 9.43 | 32 | 3576 | |
| Ostergard | city | Denmark | 55.37 | 9.45 | 98 | 3561 | |
| Ostergard | city | Denmark | 55.18 | 9.18 | 131 | 1937 | |
| Ostergard | city | Denmark | 55.18 | 9.43 | 32 | 3576 | |
| Osterholm | city | Denmark | 55.00 | 9.93 | 101 | 3099 | |
| Ostermark | city | Denmark | 55.12 | 9.40 | 164 | 5899 | |
| Ostre Snogbaek | city | Denmark | 54.97 | 9.72 | 45 | 7988 | |
| Ostre Snogbæk | city | Denmark | 54.97 | 9.72 | 45 | 7988 | |
| Ottersbol | city | Denmark | 55.13 | 8.77 | 13 | 3497 | |
| Ottersbøl | city | Denmark | 55.13 | 8.77 | 13 | 3497 | |
| Ottesgård | city | Denmark | 55.08 | 9.53 | 42 | 2455 | |
| Over Astrup | city | Denmark | 55.27 | 9.55 | 118 | 11373 | |
| Over Blaakrog | city | Denmark | 55.00 | 9.63 | 65 | 2287 | |
| Over Blakrog | city | Denmark | 55.00 | 9.63 | 65 | 2287 | |
| Over Geestrup | city | Denmark | 55.15 | 9.12 | 164 | 2662 | |
| Over Jels | city | Denmark | 55.38 | 9.25 | 147 | 4379 | |
| Over Jerstal | city | Denmark | 55.20 | 9.30 | 157 | 5348 | |
| Over Kestrup | city | Denmark | 55.20 | 9.48 | 108 | 10722 | |
| Over Lert | city | Denmark | 55.38 | 9.28 | 150 | 4344 | |
| Over Lerte | city | Denmark | 55.38 | 9.28 | 150 | 4344 | |
| Over Tandslet | city | Denmark | 54.93 | 9.98 | 190 | 2889 | |
| Overby | city | Denmark | 55.12 | 8.88 | 108 | 1540 | |
| Overby | city | Denmark | 55.40 | 9.60 | 32 | 6917 | |
| Overby | city | Denmark | 54.88 | 9.55 | 0 | 25155 | |
| Ovre Blaakrog | city | Denmark | 55.00 | 9.63 | 65 | 2287 | |
| Ovre Lerte | city | Denmark | 55.38 | 9.28 | 150 | 4344 | |
| Oxböl | city | Denmark | 55.03 | 9.77 | 65 | 8330 |