Józef Jerzy Kukuczka (24 March 1948 in Katowice, Poland – 24 October 1989 Lhotse, Nepal) was a Polish alpine and high-altitude climber.
Born in Katowice, his family origin is Silesian Goral.
On 18 September 1987, he became the second man (after Reinhold Messner), to climb all fourteen eight-thousanders in the world; a feat which took him less than 8 years to accomplish.
He is the only person in the world who has climbed two eight-thousanders in one winter.
Altogether, he ascended four eight-thousanders in winter, including three as first ascents.
Along with Tadeusz Piotrowski, Kukuczka established a new route on K2 in alpine style (the so-called "Polish Line"), which no one has repeated.