| Simojoki | |
| Source1 Location: | Simojärvi at Ranua |
| Mouth Location: | Bothnian Bay at Simo |
| Subdivision Type1: | Country |
| Subdivision Name1: | Finland |
| Length: | 193km (120miles) |
| Source1 Elevation: | 176m (577feet) |
| Basin Size: | 3160km2 |
Simojoki is a river of Finland in the region of Lapland. It flows for 193km (120miles) into the Bothnian Bay at Simo.