Linzer Athletik-Sport-Klub - more commonly known simply as Linzer ASK or just LASK - is an Austrian professional football club based in Linz and playing in the Austrian Football Bundesliga. The club plays home games at Raiffeisen Arena.
Founded in 1908 by the head of the royal post-office garage at Linz Albert Siems, the club was the first outside of Vienna to win the Austrian championship when winning in 1965. Despite mixed form in the domestic leagues, the club often features in European cup competitions.