Kilian Fischhuber (born 1 August 1983) is a professional Austrian rock climber who specializes in bouldering, sport climbing and competition climbing, where competes in bouldering and lead climbing. From 2005 to 2011, he won five Bouldering World Cups. No other male climber was ever able to win it more than three times. Due to his outstanding career, he was awarded the La Sportiva Competition Award in 2009, together with Chris Sharma.
Fischhuber discovered indoor sport climbing in 1995.
From 1997 to 1999 he participated in Lead climbing international youth competitions.
In 1999, when he was 16 years old, he entered the Austrian bouldering team and started competing in the Bouldering World Cup, winning his first bronze medal in 2003 and his first gold in 2004.
He won the Bouldering World Cup five times, in 2005, 2007, 2008, 2009, and 2011. No other climber was ever able to win it more than three times, and no other climber was able to win it three times in a row (Jérôme Meyer won it in 2001, 2003, 2006).
At the end of 2014 he announced his retirement from competitions.
Fischhuber has redpointed outdoor sport climbing routes up to grade , including making the ninth redpoint of Action Directe.
Fischhuber climbed boulder problems graded up to .