Christian Campbell

Campbell's mother, Marnie (née Neve), is a yoga instructor and psychologist from Amsterdam, Netherlands, who also ran a theatre in Guelph, Ontario. His father, Gerry Campbell, a Scottish immigrant to Canada from the East End of Glasgow, Scotland, taught high school drama classes in Mississauga, Ontario — first at Westwood Secondary School (now Lincoln M. Alexander Secondary School), later at Lorne Park Secondary School, and now at Erindale Secondary School. Campbell's maternal grandparents ran a theatre company in the Netherlands and his paternal grandparents were also performers. On his mother's side, Campbell descends from Sephardi Jews who immigrated to the Netherlands and converted to Catholicism.

Campbell's parents divorced when he was three years old. His siblings are actress Neve Campbell, actor Alex Campbell, and Damian McDonald. He and his sister, Neve, resided largely with their father (who received custody of the two), with regular periods at their mother's home. Born into an acting family (his maternal grandparents having been actors in Amsterdam) and his father an acting teacher, Campbell began training at an early age. He was acting professionally by the age of fourteen and attended Claude Watson School for the Arts in Toronto, Ontario.