Jesse Eisenberg

Mark Zuckerberg

Kevin Spacey

Executive Producer

Justin Timberlake

Sean Parker

Rashida Jones

Marylin Delpy

David Selby

Gage

Rooney Mara

Erica Albright

Brenda Song

Christy Ling

Armie Hammer

Cameron Winklevoss / Tyler Winklevoss

Douglas Urbanski

Larry Summers

David Fincher

Director

Joseph Mazzello

Dustin Moskovitz

Andrew Garfield

Eduardo Saverin

John Getz

Sy

Max Minghella

Divya Narendra

Josh Pence

Tyler Winklevoss (Body Double)

Denise Grayson

Gretchen

Bryan Barter

Billy Olsen

Dustin Fitzsimons

Phoenix Club President

Patrick Mapel

Chris Hughes

Toby Meuli

Phoenix Member Playing Facemash

Alecia Svensen

Girl at Phoenix Club

Jami Owen

Student Playing Facemash

James Dastoli

Student Playing Facemash

Robert Dastoli

Student Playing Facemash

Scotty Crowe

Student Playing Facemash

Jayk Gallagher

Student Playing Facemash