Ellar Coltrane Kinney Salmon (born August 27, 1994), known professionally as Ellar Coltrane, is an American actor. He is best known for his role as Mason Evans Jr. in Richard Linklater's film Boyhood (2014), for which he won the Critics' Choice Movie Award for Best Young Performer.
Coltrane was born in Austin, Texas to Genevieve (née Kinney), an equine-assisted therapist for autistic people, and Bruce Salmon, a musician. His parents divorced when he was nine, and his mother subsequently remarried. Coltrane's half-sister, Evelyn, was born when he was eleven. He was largely homeschooled as a child, with the exception of three years of high school, and obtained his GED.
In 2001, at age six, Coltrane was cast by filmmaker Richard Linklater to play the title character of sorts of the film Boyhood; Linklater wanted to make an unprecedented film that would show a boy's coming of age, but with the actors growing up or aging on screen. Coltrane and other members of the cast were filmed intermittently for several days at a time between May 2002 and August 2013, when Coltrane turned 19; there were 45 days of filming altogether. During his childhood, Coltrane also appeared in several other movies, including a small role in Linklater's 2006 film Fast Food Nation.