Stefan Ilsanker (born 18 May 1989) is an Austrian former professional footballer who played as a defensive midfielder.

A product of the Red Bull Salzburg academy, Ilsanker's professional career spanned 15 years, where he also played for SV Mattersburg, RB Leipzig, Eintracht Frankfurt and Genoa.

During his active career, he also represented Austria at the Under-19 European Championship and was also a member of the under-21 team.

[2] On 25 August 2009, he played his first international game for Red Bull Salzburg in the UEFA Champions League qualifier versus Maccabi Haifa.

[5][6] On 3 June 2020, Ilsanker came off the bench against Werder Bremen and scored twice in the final 10 minutes of the match to secure a 3–0 victory.