Daniel Brühl
as Alex

Katrin Sass
as Mother

Chulpan Khamatova
as Lara

Maria Simon
as Ariane

Florian Lukas
as Denis

Alexander Beyer
as Rainer

Burghart Klaußner
as Alex's Father

Michael Gwisdek
as Klapprath

Christine Schorn
as Ms. Schäfer

Jürgen Holtz
as Mr. Ganske

Jochen Stern
as Mr. Mehlert

Stefan Walz
as "Sigmund Jähn"

Eberhard Kirchberg
as Dr. Wagner

Hans-Uwe Bauer
as Dr. Mewes

Nico Ledermueller
as Alex (11 years)

Jelena Kratz
as Ariane (13 years)

Laureen Hatscher
as Baby Paula (1 year)

Felicitas Hatscher
as Baby Paula (1 year)

Martin Brambach
as Stasi 1

Michael Gerber
as Stasi 2

Robert Störr
as Official at Award Ceremony

Philipp Kupfer
as Baby Paula (3 months)

Ernst-Georg Schwill
as Taxi Driver

Rainer Werner
as Stasi in Denim Jacket

Marc Bischoff
as Young Ward Doctor

Horst-Dieter Stork
as Border Guard 1

Hartmut Kuley
as NVA-Officer

Peter Kurth
as "X-TV" Boss

Ditmar Bieseke
as Border Guard 2

Arndt Schwering-Sohnrey
as Ambulance Driver

Dirk Prinz
as Passenger

Jürgen Vogel
as "The Chick"

Elke Werner
as Saleswoman HO-Market

Regina Ziebach
as Cucumber Woman

Wolfgang Stein
as Cucumber Man

Mennan Yapo
as Flea Market Vendor

Fritz Roth
as Guard at Coca-Cola

Maximilian Brunow
as Pioneer Sasha

Bojan Heyn
as Pioneer Niko

Armin Dillenberger
as Bank Teller

Denys Darahan
as Pioneer Christian

Bastian Lang
as Pioneer Frank

Lothar Schlichthar
as Fat Man at the Pool

Alexander Reed
as Wuppertaler

Ute Michel
as Gynecologist

Svea Timander
as Father's New Wife

Hanna Schwamborn
as Carla

Rafael Hübner
as Thomas

Michael Berge
as Party Speaker