Renså (Norwegian) or Reanssuk (Northern Sami)[2] is a small village in Tjeldsund Municipality in Troms county, Norway.

It is located just east of the slightly larger village of Tovik, and about 4 km (2.5 mi) east of the village of Sandstrand.

[3] The village is located next to the Rensåelva river which flows into the Astafjorden from the Rensåvatnet lake.

The nearest larger village is Grov, about 11 km (6.8 mi) to the east.

The football grounds of the sports club IL Santor are situated on the ridge just above the village, which is called Rensåhøgda.