Alexander Megos (born 12 August 1993) is a German rock climber. He was the first climber to on-sight (climb on the first try without prior practice or advice) a route graded 9a (5.14d). He has completed multiple routes and boulder problems that are notoriously difficult, including two 9b+ (5.15c) routes (Perfecto Mundo and Bibliographie), six 9b (5.15b) routes (First Round, First Minute, Fight Club, King Capella, Ratstaman Vibrations, and The Full Journey), and some boulders with a confirmed 8C (V15) rating.