Casey Siemaszko
- Compleanno:
- 03/17/1961
- Luogo di nascita:
- Chicago, Illinois, USA:
 | Killing Kennedy (2013) Jack Ruby |
 | Public Enemies (2009) Harry Berman |
 | The Boy Who Cried Bitch: The Adolescent Years (2007) |
 | Grand Theft Auto: San Andreas - The Introduction (2004) Johnny Sindacco (voice) (uncredited) |
 | The Street Lawyer (2003) Rafter Mayes |
 | The Crew (2000) Young Bobby Bartellemeo |
 | Limbo (1999) Bobby Gastineau |
 | Chameleon II: Death Match (1999) Jake Booker |
 | Together and Alone (1998) Billy |
 | Rose Hill (1997) Fergus Carroll |
 | Bliss (1997) Tanner |
 | Mistrial (1996) Detective Bobby Zito |
 | The Phantom (1996) Morgan |
 | Black Scorpion (1995) Dr. Goddard / The Breath Taker |
 | Napoleon (1995) Conan (voice) |
 | Milk Money (1994) Cash |
 | My Life's in Turnaround (1994) Himself |
 | Teresa's Tattoo (1994) Michael |
 | The Paint Job (1993) Cal |
 | Of Mice and Men (1992) Curley |
 | L'ambassade en folie (1992) Colin Phipps |
 | The Big Slice (1991) Mike Sawyer |
 | The Chase (1991) Hutchinson |
 | Back to the Future Part II (1989) 3-D |
 | Breaking In (1989) Mike Lafebb |
 | Biloxi Blues (1988) Don Carney |
 | Young Guns (1988) Charley Bowdre |
 | Three O'Clock High (1987) Jerry Mitchell |
 | Gardens of Stone (1987) Wildman |
 | American Harvest (1987) Dakota |
 | Stand by Me (1986) Billy Tessio |
 | Amazing Stories (1986) Jonathan |
 | Miracle of the Heart: A Boys Town Story (1986) Andy Grainger |
 | Back to the Future (1985) 3-D |
 | Secret Admirer (1985) Roger Despard |
 | Silence of the Heart (1984) Jeff |
 | Hard Knox (1984) Aaron Davis |
 | Class (1983) Doug |
 | Amazing Stories: The Movie I Jonathan (archive footage) |