Hjelmsøya is an island in Måsøy Municipality in Finnmark county, Norway.

The 39-square-kilometre (15 sq mi) island lies west of the islands of Måsøya and Magerøya, north of Havøya and the mainland, and east of Ingøya.

The northernmost part of Hjelmsøya has a large bird cliff called Hjelmsøystauren, which is one of Norway's most important breeding colonies of guillemots.

It has been designated an Important Bird Area (IBA) by BirdLife International.

[1] The other one is at Sandsfjord, a fjord surrounded by high mountain cliffs.