Karl Bertil Sandström (25 November 1887 – 1 December 1964) was a Swedish military officer and horse rider. He competed at the 1920, 1924 and 1932 Summer Olympics in the individual dressage and won silver medals in 1920 and 1924. In 1932 he won another silver in the team dressage. In the individual event he originally placed second, but was moved to the last place for using clicking sounds to control his horse, which was not allowed.