Petr Prajsler (born September 21, 1965 in Hradec Králové) is a retired Czech ice hockey defenceman who played in the National Hockey League for the Los Angeles Kings between 1987 to 1990 and the Boston Bruins in 1991. He was signed by the Boston Bruins as a free-agent the next year, but only managed to play three more NHL games, going pointless. He did though have another highly productive season, this time for the Maine Mariners where he scored 12 goals and 45 points in just 61 games.