Libor Sionko (born February 1, 1977 in Ostrava) is an Czech footballer currently playing for Scottish Premier League club Rangers.
He previously played for Austria Vienna, Grazer AK, Sparta Prague and Banik Ostrava. Playing successfully for Sparta in Championship and UEFA-Championsleague, he left Prague, due to contract problems, to join high-rising Grazer Athletik Klub in February 2004, helping to achieve the first ever Austrian championship for the Styrians. He also was in the team winning the Austrian Cup for the 4th time.
After that remarkable success and change to Austria Vienna, he was a principal for a very successful challenge in the 2004-05 UEFA Cup, when the Viennese side reached the quarter-final. In 2005-06 the Czech player was an Austrian double winner a second time.
He completed his bosman transfer to Rangers on 16 May 2006 on a three year contract.
He has been capped twenty times by the Czech Republic national team, and has scored 2 goals, making 6 assists. He was called up to the Czech team for the World Cup due to Vladimír Šmicer being injured, however only featured a late substitute role in some games as the Czechs were knocked out in the group stage of the competition.
His World Cup debut came against Ghana on June 17th, 2006. Ghana won the game 2-0.
He scored on his SPL debut against Motherwell F.C. on July 30, 2006 in Gers’ 2-1 win. Sionko plays on the right of an attacking three which supports the main forward but frequently swaps position with his opposite number.