白石阿岛，Ashima Shiraishi (born April 3, 2001 in New York, NY) is an American rock climber. She started climbing at age six at Rat Rock in Central Park with her father. In a few years, she became one of the top boulderers and sport climbers in the world. Currently, she is widely considered to be the best teenage climber of either gender. Her outstanding accolades include first-place finishes in international competitions, multiple first female and youngest ascents, and several corporate sponsorships. She is featured in several short documentary-style films and is the subject of the documentary short "Return to the Red" (2012). The New York Times has called her a "bouldering phenom". Outside Magazine has described her as a "young crusher". At age 13 she became the second female, and youngest person, to climb a sport route with a difficulty grade of 5.14d/5.15a (9a/9a+). In 2016, she achieved the second ascent of the V15 Horizon in Mount Hiei, Japan and became the first female climber to climb the grade.