Jan Koller (born March 30, 1973 in Lhota, Czech Republic) is a Czech football player, who currently stars as a striker for the Czech Republic national team and the German club Borussia Dortmund. He is the all-time leading goal scorer for either the Czech Republic or the former Czechoslovakia, with 40 goals as of August 2005.
He is one of the tallest top-level footballers in Europe, at 2.02 m (nearly 6'8"). Koller started his football training as a goalkeeper, but was converted to striker by the time he started his professional career. His training as a keeper saw some use in the 2002-03 season. In one Bundesliga match at Bayern Munich, Borussia Dortmund's keeper Jens Lehmann was sent off about midway through the second half, and Koller moved from striker to keeper after he had already scored once in the first half. He kept a clean sheet for the rest of the match against good opportunities by Michael Ballack and others, and was named the Bundesliga's top keeper of the week for his performance. Nevertheless Dortmund lost this important match.
He was bought from Anderlecht in 2001. He also played for Lokeren and finished the 1998-99 season as Jupiler League topscorer for that club.
