Ålhus is a small village in the municipality of Jølster in Sogn og Fjordane county, Norway. It is located along the European route E39 highway on the northern side of the lake Jølstravatnet, in a largely agricultural area. Ålhus is located about west of the villages of Helgheim and Skei and about northeast of the villages of Vassenden and Langhaugane.
Ålhus is the millennium center of Jølster, due to its historical significance. Audun Hugleiksson erected a stone castle called Audunborg here in the 13th century. Ålhus Church, the oldest church in the municipality, is also located here. Nikolai Astrup, the famous Norwegian painter, grew up here.