Renså is a small village in the municipality of Skånland 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 Sandstrand. The population (2001) of Renså is 69. The village is located next to the Rensåelva river which flows into the Astafjorden from the Rensåvatnet lake.