Joseph Mazzello

Joseph Mazzello

Mazzello at a screening of The Pacific in February 2010
Born Joseph Francis Mazzello III
(1983-09-21) September 21, 1983
Rhinebeck, New York, U.S.
Occupation Actor, director, screenwriter
Years active 1990–present

Joseph Francis Mazzello III, also known simply as Joe Mazzello (born September 21, 1983), is an American actor, director and screenwriter, known for his roles as Tim Murphy in Jurassic Park, Eugene Sledge in the HBO miniseries The Pacific, and Dustin Moskovitz in The Social Network.

Early life

Mazzello was born in Rhinebeck, New York, and raised in Hyde Park, New York, the son of Virginia (née Strong) and Joseph Mazzello, Jr., who owned a performing arts school.[1][2] He has one older sister, Mary, and a younger brother, John, who have both appeared in films. His father is of three quarters Italian and one quarter German Jewish ancestry, while his mother is of Irish, Polish, and English descent.[3] Mazzello went to Catholic school Our Lady of Lourdes.[4] He is an alumnus of the University of Southern California, entering the USC School of Cinematic Arts in 2001 following a recommendation letter from director Steven Spielberg.[5] Mazzello paid for school with his salary from a small appearance in The Lost World: Jurassic Park (1997), something the actor jokingly referred to as "my graduation present from Spielberg".[6]


Mazzello's first film appearance was a small role in Presumed Innocent (1990), starring Harrison Ford. He followed up that success with a supporting role as an abused child in the drama Radio Flyer (1992). His most notable roles were as Douglas Gresham in Shadowlands and Tim Murphy in Jurassic Park, both in 1993, Dexter in the 1995 film The Cure, and Eugene "Sledgehammer" Sledge in the HBO miniseries The Pacific. In 2010, Mazzello played Dustin Moskovitz, one of the co-founders of Facebook in the David Fincher-directed film The Social Network.

Mazzello's directorial debut was made with the short film Matters of Life and Death (2007) in which he also stars; the cast includes David Strathairn (with whom he has worked in The River Wild (1994), Simon Birch (1998), and The Sensation of Sight (2006)), Daniel Gillies, and Rachael Leigh Cook.


Year Title Role Notes
1990 Unspeakable Acts Jason Harrison Television film
Presumed Innocent Wendell McGaffney
1992 Radio Flyer Bobby Nominated—Young Artist Award for Best Young Actor Under 10 in a Motion Picture
Jersey Girl Jason
Desperate Choices: To Save My Child Willy Robbins Television film
Nominated—Best Young Actor Under 10 in a Television Movie
1993 Jurassic Park Tim Murphy Young Artist Award for Best Youth Actor Co-Starring in a Motion Picture: Drama
Nominated—Saturn Award for Best Performance by a Younger Actor
Shadowlands Douglas Gresham
1994 River Wild, TheThe River Wild Roarke Hartman
1995 High Lonesome: A Father for Charlie Charlie Television film
Cure, TheThe Cure Dexter Nominated—Young Artist Award for Best Young Leading Actor: Feature Film
Three Wishes Tom Holman
1997 Lost World: Jurassic Park, TheThe Lost World: Jurassic Park Tim Murphy Cameo appearance
Star Kid Spencer Griffith
1998 Simon Birch Joe Wenteworth
2001 Wooly Boys Charles
2004 Raising Helen Prom date Peter
Hollow, TheThe Hollow Scott
2006 Sensation of Sight, TheThe Sensation of Sight Tripp
2007 Matters of Life and Death David Jennings Short film
2009 Beyond All Boundaries Eugene B. Sledge Short film
2010 Social Network, TheThe Social Network Dustin Moskovitz Hollywood Film Festival Award for Best Cast
Phoenix Film Critics Society Award for Best Cast
Nominated—Broadcast Film Critics Association Award for Best Cast
Nominated—San Diego Film Critics Society Award for Best Cast
2011 Allison Joe Short film
First Kiss Derek Short film
2013 G.I. Joe: Retaliation Mouse
Dear Sidewalk Gardner
2016 Undrafted Pat Murrary In post-production
Year Title Role Notes
2002 Providence Tony 2 episodes
2003 CSI: Crime Scene Investigation Justin Lamond Episode: "One Hit Wonder"
2004 Without a Trace Sean Stanley Episode: "Legacy"
2010 Pacific, TheThe Pacific Eugene Sledge Miniseries; 10 episodes
2012 Coma Geoffrey Fairweather Miniseries; 2 episodes
2013 Justified Billy St. Cyr 3 episodes
2014 Person of Interest Daniel Casey 2 episodes
2016 Elementary Griffin Episode: "A Study in Charlotte"


  1. "Joseph Mazzello Biography (1983?-)".
  2. "ISSUU - 2-9_HudsonValleyNews by Hudson Valley News". Retrieved 2014-04-05.
  3. "Joseph Mazzello - Biography - IMDb". Retrieved 2014-04-05.
  4. Robert Rorke (May 2, 2010). "Spielberg's Protégé". New York Post. Retrieved 2012-04-27.
  5. "Jurassic Park's Joseph Mazzello and Ariana Richards Today :".
  6. "Return to Jurassic Park: Finding The Lost World", The Lost World: Jurassic Park Blu-Ray (2011)
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