Apa (born Lhakpa Tenzing Sherpa; 20 January 1960), nicknamed "Super Sherpa", is a Nepalese Sherpa mountaineer who, until 2017, jointly with Phurba Tashi held the record for reaching the summit of Mount Everest more times than any other person. As part of The Eco Everest Expedition 2011, Apa made his 21st Mount Everest summit in May 2011 then retired after a promise to his wife to stop climbing after 21 ascents. He first summited Everest in 1990 and his last time to the summit was in 2011.

Apa met Edmund Hillary many times, and was on the Expedition with his son Peter Hillary in 1990, which was the first summit for both of them. Apa estimates he has been through the Khumbu Icefall about 1000 times and almost went with Rob Hall's ill-fated 1996 expedition.

When questioned about stopping at 21, Apa stated: "Everyone says 21 is a good number. I have to make my family happy. Every time I go, they worry because Everest is very risky." He was still the joint holder of the world record of Mount Everest summits as of 2017, with Phurba Tashi and Kami Rita Sherpa, but the record was broken in 2018 by Kami Rita Sherpa.