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.
Internationally Sionko made his debut for the Czech Republic in 1999 and took part in three tournaments, in particular the 2000 Olympics, the 2006 World Cup and Euro 2008. He played sporadically until 2010, finishing his career with 8 goals from 41 games.