| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oiu | city | Viljandimaa | Estonia | 58.42 | 25.97 | 180 | 465 |
| Oiu Asundus | city | Saaremaa | Estonia | 58.38 | 22.02 | 45 | 250 |
| Oiua | city | Nusa Tenggara Barat | Indonesia | -8.68 | 118.91 | 830 | 8757 |
| Oiua | city | Nusa Tenggara Barat | Indonesia | -8.28 | 117.75 | 101 | 5201 |
| Oiudtenga | city | Centre | Burkina Faso | 12.29 | -1.44 | 1000 | 81111 |
| Oiungo | city | Cunene | Angola | -16.38 | 13.62 | 4189 | 324 |