Christian Lucas Madsen (born ()February 8, 1990) is an American actor. He is best known for his roles in the films Divergent (2014) and Palo Alto (2013).
Christian Madsen was born in 1990 in Los Angeles to actors Michael Madsen and Jeannine Bisignano. His aunt is actress Virginia Madsen and his grandmother is filmmaker and author Elaine Madsen.
He began acting at the age of ten, when he appeared in a small role in one of his father's films, and spent time on the set of a number of other films, including Free Willy and The Getaway. His grandmother, filmmaker Elaine Madsen, encouraged him to pursue a career in acting after watching his performances in high school theater. His parents divorced when he was a child and he subsequently "bounced around a lot" between his parents' homes in Malibu, the San Fernando Valley, Santa Fe, and Montana. He eventually moved in with his grandmother when he was 17, and she took him to the Actors Studio and introduced him to the head of its Hollywood branch, Martin Landau.