Peter Landesman Director, Screenwriter James Badge Dale Robert Oswald Actor Zac Efron Jim Carrico Actor Marcia Gay Harden Doris Nelson Actor Billy Bob Thornton Forrest Sorrels Actor Jacki Weaver Marguerite Oswald Actor Paul Giamatti Abraham Zapruder Actor Ron Livingston James Hosty Actor Tom Welling Roy Kellerman Actor Jackie Earle Haley Father Oscar Huber Actor Colin Hanks Dr. Malcom Perry Actor Jeremy Strong Lee Harvey Oswald Actor Tom Hanks Producer Gary Goetzman Producer Bill Paxton Producer Nigel Sinclair Producer Matt Jackson Producer Steven Shareshian Executive Producer Joe Ricketts Executive Producer Ginger Sledge Executive Producer Guy East Executive Producer Brian Falk Executive Producer Tobin Armbrust Executive Producer Barry Ackroyd Cinematographer Leo Trombetta Film Editing Mark Czyzewski Film Editing James Newton Howard Original Music Bruce Curtis Production Design Rodney Becker Art Director Kari Perkins Costume Design Mary Vernieu Casting Lindsay Graham Casting