| Settlement Type: | Village |
| Pushpin Map: | Troms#Norway |
| Pushpin Label: | Årstein |
| Pushpin Label Position: | right |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Northern Norway |
| Subdivision Name2: | Troms |
| Subdivision Type3: | District |
| Subdivision Name3: | Central Hålogaland |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Gratangen Municipality |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Postal Code Type: | Post Code |
| Postal Code: | 9470 Gratangen |
| Coordinates: | 68.6903°N 17.5422°W |
| Elevation M: | 22 |
| Elevation Footnotes: | [1] |
or [2] is the administrative centre of Gratangen Municipality 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).
The Årstein area has 211 inhabitants (as of 2010), making it the largest urbanized area in the municipality.[3] Gratangen Church is located in the village.