Årstein is the administrative centre of the municipality of Gratangen in Troms county, Norway. The village is located on the north side of the Gratangsfjorden at the narrowest point along the fjord. The Årstein Bridge crosses the fjord here. The village is located about northwest of the village of Fjordbotn (at the head of the fjord) and about from the village of Hilleshamn (where the Gratangsfjorden empties into the Astafjorden).

Årstein is the administrative centre of the municipality of Gratangen in Troms county, Norway. The village is located on the north side of the Gratangsfjorden at the narrowest point along the fjord. The Årstein Bridge crosses the fjord here. The village is located about northwest of the village of Fjordbotn (at the head of the fjord) and about from the village of Hilleshamn (where the Gratangsfjorden empties into the Astafjorden).