Ytterøya[2] is an island in the Trondheimsfjord in Levanger Municipality in Trøndelag county, Norway.

[3] The Levanger–Hokstad Ferry connects the village of Hokstad on the island to the town of Levanger on the mainland.

Ytterøya has many burial mounds from the Stone Age.

The island is famous for its dense roe deer population, and a popular hunting area for hunters from Scandinavia and Germany.

In the middle to late 19th century sulphur was exported to all of Europe from the mines here.