Libby Sauter ( born October 8, 1984, in Las Vegas) is an American rock climber, mountaineer, and pediatric cardiac intensive care nurse educator. She works for a non-profit organization that aids developing countries in setting up or expanding their existing heart surgery programs. Libby along with Mayan Smith Gobat holds the women's speed record for the fastest ascent of The Nose of El Capitan, Yosemite

Sauter made the first ascent of a new route on El Hermano in Chile in 2014.[4] She set a female speed record on The Nose, El Capitan in October 2014,[1][2] also climbing two routes in one day on the face with female climber Quinn Brett.[4] She was the first woman to walk the Lost Arrow Spire Highline in Yosemite National Park.[3] She is the youngest inductee to the Mountaineering Hall of Fame