Renså is a minor village in the municipality of Skånland in Troms county, Norway. It's located just east of the slightly larger village of Tovik, and about 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. The nearest larger town is Grov, about to the east.