Hans Kammerlander (born 6 December 1956, Bolzano, South Tyrol, Italy) is an Italian mountaineer, living in Ahornach, a hamlet nearby Sand in Taufers.

In 1984, together with Reinhold Messner he was the first climber to traverse two 8000 m peaks before descending to base camp.

[1][2] He teamed with Messner, the first man to climb all fourteen 8000m peaks, on successful climbs of Cho Oyu, Gasherbrum I and II, Dhaulagiri, Makalu, and Lhotse, and is a UIAGM mountain guide (English, International Federation of Mountain Guide Associations).

[2] From 1996 to 2006, he held the Guinness World Record for the fastest ascent without supplemental oxygen of Mount Everest (16 hours and 45 minutes) and fastest ascent from Everest North Base Camp.

[7] In 2012 Kammerlander claimed to be the first person to complete the Seven Second Summits, but doubts were raised about his ascent of Mount Logan.