Mark Margolis was born on 26 November 1939 in Pennsylvania, USA. He is an American actor.

Margolis is perhaps most famous for his supporting roles in Scarface and in three films by Darren Aronofsky: Pi (1998), Requiem for a Dream (2000), and The Fountain (2006).

He also starred in House of D (2004), Still Life (2006) and Gone Baby Gone (2007).

He has had recurring roles on numerous TV shows, including The Equalizer, HBO's Oz, and most recently NBC's Crossing Jordan. He also appeared in a first season episode of Quantum Leap.

Filmography

• End of the Line (2007)
• Gone Baby Gone (2007)
• "The Black Donnellys" (1 episode, 2007)
• "Californication" (1 episode 2007)
• The Fountain (2006)
• "Brotherhood" (1 episode, 2006)
• Umney's Last Case (2006)
• Still Life (2006)
• "Waterfront" (4 episodes, 2006)
• Stay (2005)
• Headspace (2005)
• "Crossing Jordan" (1 episode, 2005)
• "Law & Order: Criminal Intent" (1 episode, 2004)
• House of D (2004)
• 2BPerfectlyHonest (2004)
• "Sex and the City" (1 episode, 2004)
• "Ed" (2 episodes, 2003-2004)
• Manhunt (2003)
• Particles of Truth (2003)
• Daredevil (2003)
• "Oz" (10 episodes, 1998-2003)
• "Hack" (4 episodes, 2002)
• Infested (2002)
• "The Practice" (1 episode, 2002)
• Bridget (2002)
• "100 Centre Street" (1 episode, 2001)
• "Law & Order" (3 episodes, 1992-2001)
• Hard Ball (2001)
• Boss of Bosses (2001)
• Queenie in Love (2001)
• The Tailor of Panama (2001)
• Hannibal (2001)
• The Hit Man and the Investigator (2001)
• Dinner Rush (2000)
• Fast Food Fast Women (2000)
• Requiem for a Dream (2000)
• Angela (2000)
• "Prince Street" (6 episodes, 1997-2000)
• The Summer of My Deflowering (2000)
• Flawless (1999)
• "Now and Again" (1 episode, 1999)
• End of Days (1999)
• Madonna: The Video Collection 93:99 (1999)
• Jakob the Liar (1999)
• Mickey Blue Eyes (1999)
• The Thomas Crown Affair (1999)
• 18 Shades of Dust (1999)
• Above Freezing (1998)
• Side Streets (1998)
• Pants on Fire (1998)
• Pi (1998)
• Trouble on the Corner (1997)
• Absolute Power (1997)
• The Pallbearer (1996)
• I Shot Andy Warhol (1996)
• "New York News" (1 episode)
• "The Guiding Light" (1952)
• Squanto: A Warrior's Tale (1994)
• "New York Undercover" (1 episode, 1994)
• Where the Rivers Flow North (1994)
• Ace Ventura: Pet Detective (1994)
• 1492: Conquest of Paradise (1992)
• "The Antagonists" (1 episode, 1991)
• The Pit and the Pendulum (1991)
• "Santa Barbara" (1984)
• Descending Angel (1990)
• Delta Force 2: The Colombian Connection (1990)
• Tales from the Darkside: The Movie (1990)
• "Jake and the Fatman" (1 episode, 1990)
• "Star Trek: The Next Generation" (1 episode, 1990)
• "Mancuso, FBI" (1 episode, 1990)
• Columbo: Columbo Cries Wolf (1990)
• Glory (1989)
• "Quantum Leap" (1 episode, 1989)
• White Hot (1989)
• Lady Mobster (1988)
• "The Equalizer" (10 episodes, 1985-1988)
• Memories of Manon (1988)
• "Crime Story" (1 episode, 1987)
• The Rosary Murders (1987)
• The Secret of My Succe$s (1987)
• The Bedroom Window (1987)
• Almost Partners (1987)
• "Kay O'Brien" (1 episode, 1986)
• "ABC Afterschool Specials" (1 episode, 1985)
• Doubletake (1985)
• The Cotton Club (1984)
• Far from Poland (1984)
• Scarface (1983)
• Eddie Macon's Run (1983)
• Rage of Angels (1983)
• Diner (1982)
• Muggable Mary, Street Cop (1982)
• The Avenging (1982)
• You Better Watch Out (1980)
• Dressed to Kill (1980)
• Going in Style (1979)
• Short Eyes (1977)
• "Kojak" (1 episode, 1977)
• The Opening of Misty Beethoven (1976)
• The Other Side of Victory (1976)