Aleksander Klumberg was an Estonian decathlete. He represented Estonia in several events at the 1920 Summer Olympics in Antwerp, and won the bronze medal in the decathlon at the 1924 Summer Olympics in Paris. In 1922, he became the first official world record holder in the decathlon. Arrested by the Soviet occupation authorities during World War II, Klumberg was deported from Estonia, imprisoned in a Russian Gulag camp from 1945 to 1954, and deported to Siberia in 1954–1955.
