Braun was born in Bethpage, New York, the son of Elizabeth Lyle and actor Craig Braun (born 1939). He has a brother, musician Christopher Deyo Braun, and half-brothers, actor Guillaume Rumiel and producer Timothy Braun. In 1993, his parents divorced. In 2001, he made his acting debut in Walter and Henry, a father-son drama television film with an ensemble cast that included John Larroquette, Kate Nelligan, Dorian Harewood, and James Coburn. He graduated from St. Mark's School in Southborough, Massachusetts in 2006.
