Anatoli Nikolaevich Boukreev (Russian: Анато́лий Никола́евич Букре́ев; January 16, 1958 – December 25, 1997) was a Russian Kazakh mountaineer who made ascents of 10 of the 14 eight-thousander peaks, i.e., peaks above 8,000 m (26,247 ft), without supplemental oxygen.