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