Zoey Deutch as Mackenzie Zuckerberg
"𝑻𝒉𝒆 𝑮𝒆𝒏𝒊𝒖𝒔"

Andrew Garfield as Eduardo Saverin
"𝑻𝒉𝒆 𝑩𝒖𝒔𝒊𝒏𝒆𝒔𝒔"

Justin Timberlake as Sean Parker
"𝑻𝒉𝒆 𝑻𝒓𝒂𝒗𝒆𝒔𝒕𝒚"

John Getz as Sy
"𝑻𝒉𝒆 𝑳𝒂𝒘𝒚𝒆𝒓"

Side Characters:

Joseph Mazzello As Dustin Moskovitz

Bryan Barter as Billy Olson

Armie Hammer as Cameron and Tyler

Rooney Mara as Erica Albright

Max Minghella as Divya Narendra

Brenda Song as Christy Ling

Malese Jow as Alice Cantwell