O Silo

Rebecca Ferguson

Juliette Nichols

Common

Robert Sims

Harriet Walter

Martha Walker

Chinaza Uche

Paul Billings

Avi Nash

Lukas Kyle

Rick Gomez

Patrick Kennedy

Tim Robbins

Bernard Holland

Shane McRae

Knox

Billy Postlethwaite

Hank

Remmie Milner

Shirley

Alexandria Riley

Camille Sims

Clare Perkins

Carla McLain

Steve Zahn

Solo

Rashida Jones

Allison

Will Merrick

Danny

Henry Garrett

Douglas Trumbell

Helene Maksoud

Nurse Alice

Geraldine James

Maire Ruth Jahns

Will Patton

Adjoint Marnes

Angela Yeoh

Karins

David Oyelowo

Sheriff Holston Becker

Ferdinand Kingsley

George Wilkins

Caitlin Zoz

Kathleen Billings

Iain Glen

Dr. Pete Nichols

Olatunji Ayofe

Teddy

Chipo Chung

Sandy

Tanya Moodie

Judge Meadows / Judge Meadows (uncredited)

Matt Gomez Hidaka

Cooper

Akie Kotabe

Diego

Robert Ryan

Uptop Resident

Taj Kandula

Judge's Secretary / Sharon

Christian Ochoa

Rick Amundsen

Sophie Thompson

Gloria Hildebrandt

Peter Gadiot

Mechanic

Amelie Child-Villiers

Young Juliette

Khairika Sinani

Raider Jean

Oscar Coleman

Anthony Sims

Sienna Guillory

Hanna Nichols

Ida Brooke

Young Shirley

Brendan Howley

Watcher #1

Jacqueline Berces

Long Term Care Nurse Amy

George Robinson

Mark Chambers

Uche Abuah

Antonia

Fahad Shaft

Barricade Raider Derek

Georgia Goodman

Karen

Paul Bigley

Dr. Leonard

James Palmer

Jim

Krishan Naidoo

Porter 1

James McGregor

Villain

Levi Goldmeier

Hero

Indigo Griffiths

Heroine

Anna Siow

Cafeteria Worker

Ayaaz Tariq

Deputy Brooks

Kumbi Mushambi

Larry

Michael-Alan Read

Toby

Michael Magnet

Older Man

Rose De Vera

Young Woman

Téa Chung

Young Girl #1

Andy Linden

Elderly Man

Lee Drage

Franky Brown

Charlie Coombes

Young Knox

Cole Vernon

Jacob Nichols

Alana Maria

Ellis

Bruce Lester-Johnson

Recycling Manager

Frances Gilbert

Mayor's Porter

Andrew P. Stephen

Charles Martin

Roderick Hill

Neighbor

Damian Schedler Cruz

Up Top Porter

Jasmine Imboden

Spectator

Sonita Henry

Regina Jackson

Delroy Atkinson

Apartment Custodian

Aleah Aberdeen

Ginny

Elizabeth Bagnall

Daughter

Billy Bagnall

Husband

Jarren Dalmeda

Flustered Man

Rowan Vickers

Night Nurse Tim

Simon Armstrong

Mosley

Isabelle Schuller

Judicial Assistant

Paul Herzberg

Kilroy

James Day

Male Porter

Mark Ramsay

Electrician

Sarah Farrell

Checkpoint Agent #1

Liam Akpan

Deputy Jerry

Nimisha Odedra

Denise

Nick Judge

Judicial Agent #1

Shannon Taiwo

Judicial Agent #2

Chris Anderson

Raider

Ojan Genc

Watcher #2

Hugh Howey

Spectator (uncredited)

Chris Anderson

Raider

Ross McCall

Rebel Leader

Peter Parker Mensah

Roy

Finn Guegan

Tim

Brian Bovell

Barney

Pippa Winslow

Gladys

Nick Haverson

Russell Conroy

Joshua Merara

Younger Man

Kosha Engler

Jean

Nari Blair-Mangat

Carl

Nathan Clough

Heckler Pike

Mickey Mason

Heckler Deke

Carryl Thomas

Teddy's Mother / Evelyn

Kieron Jecchinis

Reggie Smalls

Caitlin Innes Edwards

Phoebe Wells

Stefan Trout

Rick Wells

Robin Lovell

Juno

Gabeen Khan

Ducey

Alice Bounsall

Raider Maria

Sacharissa Claxton

Frances Boyer

Jon Chew

Calvin

Ross Armstrong

Asa

Harriet Barrow

Up-Top Woman

Kevin Badu

Large Guy

Lia Goresh

Raider Jo

Edward Linard

Clearly a Raider #1

Larry Olubamiwo

Clearly a Raider #2

Samantha Jonczyk

Raider #2 (Barricade)

Zheng Xi Yong

Felix

Noelle Adames

Heckler Susan

Tom Cox

Raider Chad

Maria Teresa Creasey

Maeve