Libor Sionko is a Czech former professional footballer who played as a midfielder. At club level he started in his home town of Ostrava, playing for the youth teams of TJ Vítkovice and Baník Ostrava. Professionally, he played in his native country until 2004, featuring for clubs including Ostrava and Sparta Prague. He then went abroad, playing in Austria for Grazer AK and Austria Wien before heading to Scotland where he played for Rangers. He subsequently had a spell in Denmark with F.C. Copenhagen before returning to the Czech Republic to finish his career with Sparta, where he last played before retiring in 2012.

Athletic Club Sparta Praha, commonly known as Sparta Prague and Sparta Praha, is a professional football club based in Prague.