Lukáš Krajíček (born March 11, 1983 in Prostějov, Czechoslovakia) is a Czech professional ice hockey defenceman currently playing for the Philadelphia Flyers of the National Hockey League (NHL). He has previously played for the Tampa Bay Lightning, Florida Panthers, and the Vancouver Canucks.
Krajíček played major junior in the Ontario Hockey League (OHL) with the Peterborough Petes. He posted 35 points in his draft year and was chosen in the first round, 24th overall, by the Florida Panthers in the 2001 NHL Entry Draft. He remained with the Petes for another two seasons and improved to 53 points in 52 games in 2002–03, his final year of junior.
He split the 2003–04 season between the Panthers and their American Hockey League (AHL) affiliate, the San Antonio Rampage, then played the entirety of 2004–05 with the Rampage due to the NHL lockout. When he returned, he earned a full-time roster spot with the Panthers and posted 16 points in 67 games.