Leonid Aleksandrovitš Komarov (Russian:Леонид Александрович Комаров, Leonid Aleksandrovich Komarov; born 23 January 1987) is an Estonian-born Finnish–Russian professional ice hockeycentre currently playing for and an alternate captain of the Toronto Maple Leafs of the National Hockey League (NHL). A natural centre early in his career, Komarov has made the transition to being able to play all three forward positions.
Komarov was born in Narva, then part of the Estonian SSR of the Soviet Union, to Russian parents. When he was five years old, Komarov's family moved to the Swedish-speaking town of Nykarleby, Finland, when his father Alexander Komarov accepted a contract to play ice hockey there. Because his father was an ethnic Ingrian Finnish, the family was able to permanently reside there. Leo Komarov also holds dual Russian-Finnish citizenship.