Walker was born Benjamin Walker Davis in Georgia, the son of Jeannine (née Walker), a music teacher, and Greg Davis, who owned a movie rental store and works in financial services.He took his mother’s maiden name as his stage name because there was another Benjamin Davis already registered with the Screen Actors Guild. Walker attended Cartersville High School in Cartersville, Georgia, the Interlochen Arts Academy in Traverse City, Michigan, and the Juilliard School in New York City. He graduated from the Juilliard Actor Training Program in 2004. Walker became engaged to actress Mamie Gummer, the daughter of Meryl Streep, in 2009and they were married in 2011.
- 2006 Unconscious, Flags of Our Fathers
- 2007 Wasted NYC, All Saints Day
- 2009 The War Boys
- 2010 Coach
- 2011 The Hot Potato
- 2012 Abraham Lincoln Vampire Hunter, Muhammad Ali’s Greatest Fight