| Kalajoki | |
| Country: | Finland |
| Mouth Coordinates: | 64.2706°N 23.9228°W |
| Length: | 130km (80miles) |
| Basin Size: | 4247km2 |
The Kalajoki (literally "Fish River") is a 130adj=onNaNadj=on long river in Northern Ostrobothnia, Finland. The river's origin is near Haapajärvi and its mouth is in Kalajoki municipality where the river flows into the Baltic Sea.