Benedict Cumberbatch as Julian Assange

Daniel Brühl as Daniel Domscheit-Berg

Anthony Mackie as Sam Coulson

David Thewlis as Nick Davies

Alicia Vikander as Anke Domscheit-Berg

Dan Stevens as Ian Katz

Stanley Tucci as James Boswell

Laura Linney as Sarah Shaw

Carice van Houten as Birgitta Jonsdottir

Peter Capaldi as Alan Rusbridger

Moritz Bleibtreu as Marcus

Alexander Beyer as Marcel Rosenbach

Jamie Blackley as Ziggy

Anatole Taubman as Holger Stark

Michael Culkin as Ralph Zilke

Alexander Siddig as Dr. Tarek Haliseh

Michael Kranz as Otto

Axel Milberg as Hans

Philip Bretherton as Bill Keller

Joseph Kinyua Muriuki as John Paul Oulu

Peter King Nzioki as Oscar Kamau Kingara

Lydia Leonard as Alex Lang

Amir Boutrous as Mutassim Al-Gaddafi

Mimi Ferrer as Shida Haliseh

Gudmundur Thorvaldsson as WikiLeaks Staffer #1

Hera Hilmar as Wikileaks Staffer #2

Nigel Whitmey as General Thomason

Camilla Rutherford as Guardian Lawyer

Ludger Pistor as Supervisor

Ben Rook as Julian Assange jeune