Ibestad is a municipality in Troms county, Norway. It is part of the Hålogaland traditional region. The administrative centre of the municipality is the village of Hamnvik. Some of the larger villages in Ibestad include Sørvika, Å, and Laupstad.
The municipality encompasses the two islands of Andørja and Rolla, which are connected by the Ibestad undersea tunnel. The MjøSund Bridge connects Andørja to Salangen on the mainland. The highest point in Ibestad is the mountain Langlitinden at a height of 1,276 m (4,186 ft) above sea level.
The municipality (originally the parish) is named after the old Ibestad farm (Old Norse: Ívarsstaðir), since the first church was built there. The first element is the genitive case of the male name Ívarr and the last element is staðir which means "homestead" or "farm". Prior to 1918, the name was spelled Ibbestad.