Rachel McAdams
Sigrit Ericksdottir

Will Ferrell
Lars Erickssong

Pierce Brosnan
Erick Erickssong

Dan Stevens
Alexander Lemtov

Jamie Demetriou
Kevin Swain

Ólafur Darri Ólafsson
Neils Brongus

Μελισσάνθη Μάχουτ
Mita Xenakis

Joi Johannsson
Jorn

Björn Hlynur Haraldsson
Policeman - Arnar

Graham Norton
Graham Norton

Demi Lovato
Katiana

Jóhannes Haukur Jóhannesson
Johans

Bobby Lockwood
Jeff

Elena Saurel
Stage Manager

Julian Miller
Janus Skoene

Mikael Persbrandt
Victor Karlosson

Jon Kortajarena
Corin Vladvitch

Elina Alminas
Sasha

Alfrun Rose
Anna

Elín Petersdóttir
Helka

Christopher Jeffers
Johnny John John

Rebecca Harrod
Brittny

Josh Zaré
Bill

Eleanor Williams
Jenn

Björn Stefánsson
Ian

Maxim De Villiers
French Voter

Chris Lew Kum Hoi
Jae-Bong

Tómas Lemarquis
Jiles

Smari Gunn
Lighting Assistant

Kajsa Mohammar
Lisa

Gudmundur Thorvaldsson
Man #1 (1974)

Arnar Jónsson
Man #2 (1974)

Natasia Demetriou
Nina

Hannes Óli Ágústsson
Olaf Yohansson

Hlynur Þorsteinsson
Policeman - Robert

William Lee Adams
William Lee Adams

Heidi Niemi
Stage Manager 2

Chris Beaumont
Steve Gunderson

Laura Hayden
The Wonder Four

Joshua Rumble
The Wonder Four

Harry Balazs
The Wonder Four

Jackson Couzens
The Wonder Four

Halldora Thoell
Woman #1 (1974)

Nína Dögg Filippusdóttir
Woman #2 (1974)

Alfie Melia
Young Lars

Mark Adams
Jon Ola Sand

Zack Propert
Stephan (Drummer)

Brie Kristiansen
Ros

Gunnar Cauthery
Aron

Milan van Weelden
21st Century Viking

Alexander Tol
Dutch Voter

Andrei Zayats
Czech Republic Voter

Junior Delius
Dailbour Jinski - Belarus

Daniela Tocari
Romanian Voter

Tharan Sivapatham
Airport Attendant

Miguel Angelo
Portugal Voter

Eveline Suter
Swiss Voter

Tommy Ashby
White Snow

Lydia Clowes
White Snow

Aiste S. Gram
Aiste Gramantaite

Salvador Sobral
Salvador Sobral

Marcus Garvey
Eurovision Director

John Lundvik
John Lundvik

Anna Odobescu
Anna Odobescu

Bilal Hassani
Bilal Hassani

Loreen
Loreen

Jessy Matador
Jessy Matador

Alexander Rybak
Alexander Rybak

Jamala
Jamala

Elina Netšajeva
Elina Nechayeva

Thomas Neuwirth
Conchita Wurst

Netta
Netta

Sophia-Grace Donnelly
Young Sigrit

Trevor Allan Davies
Old Accordion Player

Spike Jefferson
Old Bass Player

Grant Crookes
Icelandic Bar Patron (uncredited)

Jodie Cuaresma
Icelandic Punter (uncredited)