Helgbustadøya (sometimes Helgebustad or Helgebostad) is an island in the municipality of Hitra in Trøndelag county, Norway. It is an island located in the Straumsfjorden just off the northwestern coast of the island of Hitra, just east of the Bispøyan islands, about 10 kilometres (6.2 mi) northeast of the village of Kvenvær, and about 8 kilometres (5.0 mi) southwest of the village of Melandsjøen.

The eastern third of the island has a pine forest that is a nature reserve and the western two-thirds is a rocky, barren plateau that has many ponds and marsh areas.

• List of islands of Norway