Karasjohka (Norwegian), Kárášjohka (Northern Sami), or Kaarasjoki (Kven)[1] is a river in Finnmark county, Norway.

It flows into the famous salmon-fishing Tana River near the Finnish village of Karigasniemi on the Norway-Finland border.

The river begins high on the Finnmarksvidda plateau and then flows north through Kautokeino and Karasjok municipalities.

About 15 kilometres (9.3 mi) west of the village of Karasjok, the river turns and heads to the east.

The European route E06 highway runs along the northern shore of the last 10 kilometres (6.2 mi) of the river.