- as Mark Zuckerberg
- as Eduardo Saverin
- as Sean Parker
- as Erica Albright
- as Dustin Moskovitz
- as Marylin Delpy
- as Cameron and Tyler Winklevoss
- as Christy Lee
- as Alice
- as Divya Narendra
- as Ericas Mitbewohnerin
- as Larry Summers
- as Tyler Winklevoss
- as Sy
- as Gretchens Assistentin
- as Gage
- as Gretchen
- as Billy Olsen
- as Phoenix Club President
- as Chris Hughes
- as Phoenix Member Playing Facemash
- as Girl at Phoenix Club
- as Student Playing Facemash
- as Student Playing Facemash
- as Student Playing Facemash
- as Student Playing Facemash
- as Student Playing Facemash
- as B.U. Guy in Bra
- as Mr. Cox
- as Mrs. Cox
- as Student in Communications Office
- as Court Reporter
- as Henry
- as Ad Board Chairwoman
- as CS Lab Professor
- as Phoenix Club Hazer
- as Phoenix Club Pledge
- as A Capella Group
- as A Capella Group
- as A Capella Group
- as A Capella Group
- as A Capella Group
- as A Capella Group
- as A Capella Group
- as A Capella Group
- as K.C.'s Friend
- as K.C.'s Friend
- as K.C.
- as Speaker/Bill Gates
- as Stuart Singer
- as Vikram
- as Bob
- as Reggie
- as Amelia Ritter
- as Larry Summers' Secretary
- as Anne
- as Ad Executive
- as Tori
Watch "The Social Network":