Kjosfossen is a waterfall located in the Aurland municipality of the Sogn og Fjordane county in Norway. The waterfall is one of the most visited tourist attractions in Norway. Its total fall is around 225 metres (738 ft)
The Flåm Line passes directly in front of and over the lower part of the waterfall, which is one of the main attractions for tourists who take the Flåm Line.
The waterfall is located about three miles from Myrdal Station. During the main tourist season in the summer an actress dressed as a legendary Huldra (a seductive forest creature in Scandinavian folklore) dances and sings in front of the waterfall as the trains enter the station for the amusement of the tourists. The Huldra actresses are all students from the Norwegian ballet school.