Frognerseteren is the end station of the Holmenkollen Line of the Oslo Metro, located in the Marka section of Oslo, the capital city of Norway.

[1] The elevation difference between this station and the lowest in Oslo Metro (Stortinget), 478 meters (1,568 ft), is the highest elevation difference within a metro network in the world.

The area around Frognerseteren has very little population, but is popular for recreation, with a restaurant and hiking trails or, during the winter, skiing.

Tryvannstårnet is also within walking distance although Voksenkollen station is slightly closer.

Originally this place was the seter (mountain dairy farm) of Frogner Manor.