Athletic club Klagenfurt (KAC) are the most successful club in the history of Austrian hockey and were founded in 1909. Their hockey team first started playing in 1923 and in 1934 they became the very first Austrian hockey league champion to win the league but not be based in the country’s capital, Vienna. They have won 32 national titles in total.

Klagenfurt have also been very successful in European competitions over the years and even participated in the inaugural 1966 season of the European Cup. They participated in the European Cup 16 times and made it all the way to the final in 1969.

KAC first participated in the Champions Hockey League in 2015/16. They also qualified and participated in the 2017/18 season and the 2019/20 season, where they beat elite Finnish side Tappara Tampere and Norwegian newcomers Frisk Asker both home and away in the Group Stage. Despite recent success in the CHL, they failed to advance to the Playoffs in all three seasons. 

They first made it into the Playoffs in the 2021/22 season, where they made it out of Group G and faced Leksands IF in the Round of 16.