| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oulu | city | Norra Osterbotten | Finland | 65.02 | 25.47 | 49 | 19697 |
| Oulu | city | Wisconsin | United States | 46.63 | -91.53 | 1017 | |
| Oulu linn | city | Norra Osterbotten | Finland | 65.02 | 25.47 | 49 | 19697 |
| Oului | city | Ouham-Pende | Central African Republic | 7.44 | 15.84 | 3349 | 1891 |
| Oulujoki | city | Norra Osterbotten | Finland | 65.00 | 25.55 | 59 | 23786 |
| Ouluk | city | Sabah | Malaysia | 5.18 | 115.98 | 839 | 2273 |
| Oulun University Hospital Heliport | airport | 65.00 | 25.52 | 43 | 0 | ||
| Oulunihuta | city | Sumatera Utara | Indonesia | 1.99 | 99.18 | 4189 | 11496 |
| Oulunkylae | city | Nyland | Finland | 60.23 | 24.97 | 88 | 184762 |
| Oulunkylä | city | Nyland | Finland | 60.23 | 24.97 | 88 | 184762 |
| Oulunsalo | city | Norra Osterbotten | Finland | 64.93 | 25.42 | 32 | 4247 |
| Oulunsuu | city | Norra Osterbotten | Finland | 65.00 | 25.53 | 65 | 23563 |