| Official Name: | Olwiyo |
| Pushpin Map: | Uganda |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Uganda |
| Subdivision Type: | Country |
| Subdivision Name: | Uganda |
| Subdivision Type1: | District |
| Subdivision Name1: | Nwoya |
| Unit Pref: | Imperial |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 2.5375°N 31.885°W |
Olwiyo is a town in Nwoya District in the Northern Region of Uganda.
The town is approximately 21km (13miles), by road, southwest of Nwoya, the site of the district headquarters.[1] The town is at the intersection of the Karuma–Pakwach road with the Acholibur–Gulu–Olwiyo Road, approximately 314km (195miles) north of Kampala, the capital and largest city of Uganda.[2] The coordinates of Olwiyo are 2°32'15.0"N, 31°53'06.0"E (Latitude:2.5375; Longitude:31.8850).
A 60km (40miles) 440 kilovolt electricity line from Karuma Power Station is under construction to a substation in Olwiyo, under the supervision of Intec Gopa International Energy Consultants GmbH of Germany.[3]