Iñaki Ochoa de Olza (May 29, 1967, in Pamplona, Navarre – May 23, 2008, on Annapurna, Nepal) was a Spanish mountaineer and climber. Ochoa de Olza participated in over thirty distinct climbing expeditions in the Himalayas during his career and was involved in more than 200 expeditions as a guide. His achievements included summiting 12 of the world's 14 highest mountains (repeating one of them, Cho Oyu) without the use of supplemental oxygen. Ochoa publicly stated that he did not believe in using oxygen to climb mountains, asserting that "if you use oxygen, you are not a mountaineer; you are more like an astronaut or a scuba diver." He died of pulmonary edema in May 2008 while attempting to climb Annapurna (which would have been his 13th eight-thousander).
