Obsazení

• Jesse Eisenberg — Mark Zuckerberg
• Andrew Garfield — Eduardo Saverin
• Justin Timberlake — Sean Parker
• Armie Hammer — Cameron Winklevoss / Tyler Winklevoss
• Brenda Song — Christy Lee
• Randy Evans — Student in Communications Office
• Cherilyn Wilson — Sorority Girl
• Trevor Wright — B.U. Guy in Bra
• Nancy Linari — Larry Summers' Secretary
• Rashida Jones — Marylin Delpy
• John Getz — Sy
• David Selby — Gage
• Joseph Mazzello — Dustin Moskovitz
• Barry Livingston — Mr. Cox
• Shelby Young — KC
• Scott Lawrence — Maurice
• Toby Meuli — Phoenix Member Playing Facemash
• Alex Reznik — Prince Albert's Aide
• Peter Holden — Facebook Lawyer
• Wallace Langham — Peter Thiel
• Scotty Crowe — Student Playing Facemash
• Pamela Roylance — Ad Board Chairwoman
• Oliver Muirhead — Mr. Kenwright
• Monique Edwards — Bank Teller
• Mark Saul — Bob
• Mariah Bonner — Tori
• Marcella Lentz-Pope — Erica's Roommate
• Melise — Alice Cantwel
• Lacey Beeman — Sorority Girl
• Josh Pence — Tyler Winklevoss (double)
• John Hayden — Howard Winklevoss
• Jared Hillman — Mackey
• James Shanklin — Prince Albert
• Inger Tudor — Anne
• Franco Vega — Policeman
• Felisha Terrell — Beautiful Woman
• Emma Fitzpatrick — Sharon
• Denise Grayson — Gretchen
• Darin Cooper — Facebook Lawyer
• Adina Porter — Gretchen's Associate
• Dakota Johnson — Amelia Ritter
• Christopher Khai — Intern Ian
• Cedric Sanders — Reggie
• Carrie Armstrong — Court Reporter
• Caitlin Gerard — Ashleigh
• Brian Palermo — CS Lab Professor
• Andrew Thacher — Policeman
• Caleb Landry Jones — Fraternity Guy
• Rooney Mara — Erica Albright
• Abhi Sinha — Vikram
• Aaron Sorkin — Ad Executive
• Max Minghella — Divya Narendra