| DiCaprio, Leonardo |
Howard Hughes |
| Blanchett, Cate |
Katharine Hepburn |
| Beckinsale, Kate |
Ava Gardner |
| Reilly, John C. |
Noah Dietrich |
| Baldwin, Alec |
Juan Trippe |
| Alda, Alan |
Senator Ralph Owen Brewster |
| Holm, Ian |
Professor Fitz |
| Huston, Danny |
Jack Frye |
| Stefani, Gwen |
Jean Harlow |
| Law, Jude |
Errol Flynn |
| Scott, Adam |
Johnny Meyer |
| Ross, Matt |
Glenn Odekirk |
| Garner, Kelli |
Faith Domergue |
| Conroy, Frances |
Mrs. Hepburn |
| Spiner, Brent |
Robert Gross |
| DeSantis, Stanley |
Louis B. Mayer |
| Herrmann, Edward |
Joseph Breen |
| Dafoe, Willem |
Roland Sweet |
| Welsh, Kenneth |
Dr. Hepburn |
| MacKenzie, J. C. |
Ludlow |
| Davich, Jacob |
Howard Hughes, 9 Yrs. Old |
| Sloan, Amy |
Howard Hughes' Mother |
| Hennings, Sam |
Hell's Angels Stunt Coordinator |
| Chrest, Joe |
Hell's Angels Director of Photography |
| Wainwright, Rufus |
Cocoanut Grove Vocalist #1 |
| Standjofski, Harry |
Crony of Louis B. Mayer |
| Maran, Josie |
Cigarette Girl |
| Shilton, Justin |
Hell's Angels Pilot |
| Holden, Arthur |
Radio Announcer |
| Ducasse, Raymond |
Roscoe Turner |
| Reidy, Joseph P. |
Aide to Howard (as Joseph Reidy) |
| Demers, Stéphane |
Maitre d' |
| Jacques, Yves |
Waiter |
| Wainwright, III, Loudon |
Cocoanut Grove Vocalist #2 (as Loudon Wainwright) |
| Cavalier, Jason |
Cocoanut Grove Patron |
| Ufland, Chris |
Engineer |
| Dubois, Al |
Pan Am Executive #1 |
| Toy, Alan |
Man on Crutches |
| Tillinger, Sebastian |
Timer |
| Bradford, James |
Uncle Willy |
| Cobden, Joe |
Another Guest #1 |
| Smith, Linda |
Another Guest #2 |
| Purdham, David |
Emcee |
| O'Rourke, Kevin |
Spencer Tracy |
| Moore, Lisa Bronwyn |
Noah's Wife |
| Campbell, Emma |
Jack Frye's Wife, Helen |
| Wainwright, Martha |
Cocoanut Grove Vocalist #3 |
| Laresca, Vincent |
Jorge |
| Holland, Matt |
Hughes' Staff Person |
| John, Dennis St |
Nick the Custodian |
| Campbell, Keith |
Marine |
| Vandecruys, Al |
Doctor |
| Rae, James |
FBI Agent |
| McAuliffe, Kathleen |
Brewster's Maid |
| Sciutto, Nellie |
Secretary |
| Haig, Terry |
Another Senator |
| Koensgen, John |
Pan Am Executive #2 |
| Akeson, Mark |
Caretaker |
| Pollard, Jason |
Caretaker |
| Giordano, Vince |
Cocoanut Grove Band Leader |
| Black, Gavin |
Hughes' Film Crewman (uncredited) |
| Centoducati, Benjamin |
Film Worker (uncredited) |
| DeCicco, Elizabeth |
Starlet (uncredited) |
| Elizabeth, Meghan |
Starlet (uncredited) |
| Franke, Danielle |
Esquire Starlet (uncredited) |
| Hayes, Trevor |
Chef (uncredited) |
| Held, Harrison |
Louis B. Mayer Crony (uncredited) |
| Kerr, Ronnie |
Hughes' Aide (uncredited) |
| Klamm, Jason |
Man in Tux at 'Hell's Angels' Premiere (uncredited) |
| Lynch, Brian T. |
Ground Crewman (uncredited) |
| Reidy, Matthew |
Photographer (uncredited) |
| Sahadi, Scott |
Photographer (uncredited) |
| Scorsese, Martin |
Hell's Angels Projectionist (voice) (uncredited) |
| Wolfe, Michael-John |
Cary Grant (uncredited) |
| Zafran, Jeremy |
TWA Executive (uncredited) |
