Klaus Ambrosch

Klaus Ambrosch (born 23 May 1973 in Knittelfeld) is an Austrian decathlete. His personal best result was 8122 points, achieved in July 2001 at the Hypo-Meeting in Götzis. His life partner is the German long jumper Bianca Kappler.

Representing the Arizona Wildcats track and field team, Ambrosch won the 1998 NCAA Division I Outdoor Track and Field Championships in the decathlon.