Joseph Mazzello (born September 21, 1983) is an American actor. He is best known for his roles as Tim Murphy in Jurassic Park, Eugene Sledge in the HBO miniseries The Pacific, Dustin Moskovitz in The Social Network, and Queen bass player John Deacon in the biopic Bohemian Rhapsody.

Early life
Mazzello was born in Rhinebeck, New York, and raised in Hyde Park, New York, the son of Virginia (née Strong) and Joseph Francis Mazzello Jr., who owned a dance studio. Mazzello went to the Catholic school Our Lady of Lourdes. 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. 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 his graduation present from Spielberg.