Skåtøy is an island in Kragerø Municipality in Telemark county, Norway.

The island of Jomfruland lies about 2 kilometres (1.2 mi) to the east of Skåtøy.

The Jomfruland National Park lies just to the east of the island.

The first element is identical to the word skot which means "overhang" or "projection of land".

Prior to the 1917 Norwegian language reform law, the name was written "Skaatø".