"Put on Your White Sombrero" is a song by the Swedish pop group ABBA, recorded during sessions for the band's 1980 album Super Trouper.
Although recorded in Polar Studios in September 1980, the song did not make it to the final track list of the album.
The track's arrangement was re-used in the song "Cassandra", which was recorded for ABBA's next intended studio album (following 1981's The Visitors) in the summer of 1982.
This project was later abandoned, and the group would instead release a compilation album called The Singles: The First Ten Years in November 1982.
"Put on Your White Sombrero" also appeared as one of the tracks on a limited edition bonus single with the ABBA Gold hits package in 1996.