Lars Sven "Lasse" Hallström (b. 2 June 1946, Stockholm, Sweden) is a Swedish film director.
Hallstrom's mother was the Swedish writer Karin Lyberg (1907 - 2000). His maternal grandfather, Ernst Lyberg, was the Swedish Minister of Finance in the first cabinet of Carl Gustaf Ekman (1926 - 1928) and leader of the Liberal Party of Sweden (1930 - 1933).
Hallström learned his craft making music videos, in particular those made for the group ABBA, which pioneered the era of the music video, and also many innovative styles of film making. After the international success of My Life as a Dog, Hallström has been working on American movies. He was nominated for an Academy Award for the movie The Cider House Rules.