Børselva

,, or is a river in Porsanger Municipality in Finnmark county, Norway. The 76.2 km long river runs from the mountains down to the village of Børselv, and it then empties out into the Porsangerfjorden. The river has a 882.81 km2 watershed and at the mouth, the water discharges at a rate of 18.47 m3/s.

This area has three productive salmon rivers, the other two being Lakselva (which literally means the salmon river) and Stabburselva. The river has good grilse runs and salmon weighing around 10 kg are annually caught here.

The Børselva river runs through the Silfar canyon where the water is emerald green in colour and crystal clear. That is one of the deepest canyons in Europe.