| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| O | city | Denmark | 56.45 | 9.65 | 55 | 2663 | |
| Oby | city | Denmark | 56.45 | 9.65 | 55 | 2663 | |
| Oddense | city | Denmark | 56.65 | 8.95 | 85 | 3888 | |
| Odens | city | Denmark | 56.65 | 8.95 | 85 | 3888 | |
| Odsgaarde | city | Denmark | 56.42 | 9.52 | 193 | 4687 | |
| Odsgarde | city | Denmark | 56.42 | 9.52 | 193 | 4687 | |
| Oksenbol | city | Denmark | 56.77 | 8.30 | 65 | 1020 | |
| Oksenbøl | city | Denmark | 56.77 | 8.30 | 65 | 1020 | |
| Oksenvad | city | Denmark | 56.62 | 9.02 | 52 | 7377 | |
| Ording | city | Denmark | 56.72 | 8.77 | 3 | 2320 | |
| Ormstrup | city | Denmark | 56.33 | 9.65 | 154 | 4969 | |
| Orndrup | city | Denmark | 56.78 | 8.57 | 13 | 1336 | |
| Orndrup Mark | city | Denmark | 56.78 | 8.57 | 13 | 1336 | |
| Orum | city | Denmark | 56.57 | 9.25 | 3 | 3018 | |
| Orum | city | Denmark | 56.82 | 8.33 | 13 | 1445 | |
| Orum | city | Denmark | 56.48 | 9.63 | 137 | 1416 | |
| Orum Sondermark | city | Denmark | 56.47 | 9.63 | 29 | 1483 | |
| Oslos | city | Denmark | 57.02 | 9.02 | 3 | 1017 | |
| Oster Agger | city | Denmark | 56.78 | 8.25 | 6 | 711 | |
| Oster Assels | city | Denmark | 56.70 | 8.70 | 29 | 2335 | |
| Oster Bolle | city | Denmark | 56.70 | 9.45 | 68 | 3389 | |
| Oster Borsting | city | Denmark | 56.47 | 9.10 | 91 | 2683 | |
| Oster Dolby | city | Denmark | 56.60 | 9.00 | 68 | 10220 | |
| Oster Faddersbol | city | Denmark | 56.93 | 8.47 | 42 | 2396 | |
| Oster Frederikshede | city | Denmark | 56.35 | 9.28 | 236 | 3700 | |
| Oster Frederikshoj | city | Denmark | 56.37 | 9.23 | 213 | 3153 | |
| Oster Hunderup | city | Denmark | 56.90 | 8.92 | 3 | 880 | |
| Oster Hundrup | city | Denmark | 56.90 | 8.92 | 3 | 880 | |
| Oster Hvidbjerg | city | Denmark | 56.75 | 8.62 | 78 | 2361 | |
| Oster Jolby | city | Denmark | 56.83 | 8.70 | 45 | 2982 | |
| Oster Lyby | city | Denmark | 56.63 | 9.07 | 3 | 2728 | |
| Oster Rosholm | city | Denmark | 57.08 | 8.77 | 22 | 1246 | |
| Oster Teglgaard | city | Denmark | 56.43 | 9.42 | 72 | 16833 | |
| Oster Teglgard | city | Denmark | 56.43 | 9.42 | 72 | 16833 | |
| Oster Vandet | city | Denmark | 57.00 | 8.62 | 78 | 5197 | |
| Oster Vanned | city | Denmark | 57.00 | 8.62 | 78 | 5197 | |
| Ostergard | city | Denmark | 56.73 | 8.33 | 200 | 892 | |
| Osterhede | city | Denmark | 56.37 | 9.13 | 127 | 1463 | |
| Osterild | city | Denmark | 57.03 | 8.85 | 9 | 1733 | |
| Osterris | city | Denmark | 56.57 | 9.10 | 16 | 7918 | |
| Ostlos | city | Denmark | 57.02 | 9.02 | 3 | 1017 | |
| Otting | city | Denmark | 56.63 | 8.92 | 144 | 4394 | |
| Over Astrup | city | Denmark | 56.77 | 8.40 | 134 | 5291 | |
| Over Ginderup | city | Denmark | 56.67 | 8.83 | 45 | 1546 | |
| Over Hjerk | city | Denmark | 56.68 | 8.93 | 55 | 2871 | |
| Over Viskum | city | Denmark | 56.47 | 9.58 | 85 | 1446 | |
| Overgaard | city | Denmark | 56.20 | 9.47 | 206 | 11462 | |
| Overgaard | city | Denmark | 56.87 | 8.72 | 91 | 2057 | |
| Overgaard | city | Denmark | 56.77 | 8.33 | 137 | 1301 | |
| Overgaarde | city | Denmark | 56.20 | 9.47 | 206 | 11462 | |
| Overgaardsminde | city | Denmark | 56.68 | 8.58 | 3 | 1467 | |
| Overgardsminde | city | Denmark | 56.68 | 8.58 | 3 | 1467 | |
| Overgård | city | Denmark | 56.87 | 8.72 | 91 | 2057 | |
| Overgård | city | Denmark | 56.77 | 8.33 | 137 | 1301 | |
| Overgårde | city | Denmark | 56.20 | 9.47 | 206 | 11462 | |
| Overlund | city | Denmark | 56.45 | 9.45 | 111 | 17888 | |
| Ovre Astrup | city | Denmark | 56.77 | 8.40 | 134 | 5291 | |
| Ovtrup | city | Denmark | 56.78 | 8.67 | 111 | 2750 | |
| Oxenbol | city | Denmark | 56.77 | 8.30 | 65 | 1020 | |
| Oxenvad | city | Denmark | 56.62 | 9.02 | 52 | 7377 |