List of Climbers and Mountaineers - I

I

• Marcel Ichac (1906–1994) France. Filmed first French expedition in Himalaya Karakoram (1936) and the second Annapurna (1950).
• Ulrich Inderbinen (1900–2004) Switzerland. Guide. 371 Matterhorn ascents, last at 90 years old.
• Alberto Iñurrategi (born 1968) Spain. Youngest person to climb all eight-thousanders (33 years old) (4th without supplemental oxygen).
• Andrew Irvine (1902–1924) UK. Died on Everest with George Mallory (1924).
• R. L. G. Irving (1877–1969) UK. Alpine pedagogue and author.