Thorleif Schjelderup (20 January 1920 – 28 May 2006) was a Norwegian ski jumper, author and environmentalist. He was born to Ferdinand Schjelderup and Marie Leigh Vogt. His father was a Supreme Court judge, a mountaineering pioneer, and a leader of the Norwegian resistance movement during World War II. His son grew up in Oslo, where he took up ski jumping. He placed fourth at the Holmenkollen ski festival in 1940 and second in 1946 and 1948. In 1948 he also won bronze medals at the national championships and Winter Olympics and graduated in law from the Oslo University. On 15 March 1950 he became the first Norwegian athlete to break the 100 m barrier when he jumped over 106 m in Planica, Yugoslavia. He retired in 1953 to become a ski jumping coach with Italian (1953–56) and Norwegian natio