Claudine van der Straten-Ponthoz (Etterbeek, 25 September 1924 - Himalaya 2 October 1959) was a pioneering Belgian-French mountaineer, who died on October 2, 1959 while taking part in a women-only expedition to climb up 26,867-foot Mount Cho Oyu. She and the leader of the expedition, Mme Claude Kogan, and two Sherpa porters perished in an avalanche. Dorothea Gravina then took charge of the expedition.