Terry O'Quinn is an American actor best known for his role as John Locke on the television series Lost. Born on July 15, 1952, in Sault Ste. Marie, Michigan, he has had a successful career in film and television, earning critical acclaim for his performances. In addition to Lost, O'Quinn has appeared in various other shows and movies, including The Stepfather and Millennium. His work has garnered several awards, including a Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series. O'Quinn is recognized for his distinctive voice and commanding presence on screen.