Agnes Buen Garnås (23 October 1946 – 12 November 2024) was a Norwegian folk singer from the county of Telemark. She came from a famous musical family from the town of Jondal, and was known particularly for her singing of ancient unaccompanied Norwegian ballads, as well as her updated arrangements of these songs in collaboration with the Norwegian saxophonist Jan Garbarek on the ECM album Rosensfole.

From 1975 to 1977, she studied at the Telemark University College.

Other family members who are well known as traditional musicians include her brothers, Hauk Buen and Knut Buen, and her son Per Anders Buen Garnås.

Buen Garnås died in Notodden on 12 November 2024, at the age of 78.