- Amber Heard - Nadine Cross
- Ian Hawes - Plague Victim
- Donald Sales - Sargeant
- M.J. Kokolis - Older Brother
- Curtiss Cook Jr. - Campion
- J.K. Simmons - General Starkey
- Reese Alexander - Sniffling Guard
- Primo Allon - Savino
- Jagua Arneja - Terrifed Cashier
- Tim Carlson - Male Patient Stage 5
- Miles Chalmers - Male Patient #2 Stage 5
- Kristy Dawn Dinsmore - Larry's One-Night Stand
- Darren Dolynski - Wayne Stuckey
- Fletcher Donovan - Boulder Resident
- Camden Filtness - Suited Man
- Eddie Flake - Hospital Doctor
- Shishy Gebru - Hipster
- Heather Graham - Rita
- Leah Hennessey - Female Mormon Type #1
- Jeremy Jones - Andrew 'Poke' Freeman
- Richard Meen - Tube Necked Inmate
- Liza Huget - Townsperson #2
- Liza Huget - Townsperson #1
- Sean Millington - Stalker #1
- Jenny Mitchell - Female Mormon Type #2
- Iris Paluly - Female Patient Stage 5
- Luvia Petersen - Stacie
- Lisa Renee Pitts - Alice Underwood
- Michel Issa Rubio - Stalker
- Carolyn Tinglin - Nurse
- Danny Wattley - Trask
- Nyla Alleyne - Amanda
- Isla Crerar - Young Nadine
- Brandyn Eddy - Vince
- TJ Kayama - Heck Drogan
- Kim Kondrashoff - Sheriff Baker
- Jasmine Lukuku - Lacy
- Myles McCarthy - Booth
- Angus Sampson - Garvey
- Bruce Blain - Poul Impening
- Lisa Chandler - Susan
- Joe Costa - Townsperson #1
- Mike Wasko - New Arrival
- Natalie Martinez - Dayna Jurgens
- Shadi Janho - Bookie
- Arkie Kandola - Foreman
- Lissa Neptuno - Neighbor
- Hugo Raymundo - Bo
- Clifton Collins Jr. - Bobby Terry
- Gabrielle Rose - Judge Harris
- Mark Gibbon - Burly Guard #1
- Cameron McDonald - Frannie's Dad
- Nicholas Lea - Norris
- Daniel Sunjata - Cobb
- Eion Bailey - Teddy Weizak
- Hamish Linklater - Dr. Jim Ellis
- Jennifer Juniper Angeli - Harold's Mom
- Fiona Dourif - Rat Woman
- Seth Whittaker - Burly Guard
- Ezra Miller - Trashcan Man
- Paul Jarrett - Head Custodian
- Jason Burkart - Biker Security Guard
- Todd Matthews - Julie's Cameraman
- Spencer Drever - Younger Brother
- Sunita Prasad - Sophia
- Ariana Nica - Adorable Child
- Troy Mundle - Ralph Hodges
- Rob McEachern - Vic
- Harrison MacDonald - Corporal
- Mariessa Portelance - Blood Tech
- David Parent - Tommy
- J. Douglas Stewart - Hap
- Jesse Stanley - Amy Lauder
- Veena Sood - Dr. Biswas
- Nicholas Dohy - Boulder Citizen
- Luis Javier - Native Chief
- Tarun Keram - Steve
- Tarun Keram - Steve (uncredited)
- Bryan Cranston - The President (voice) (uncredited)
- Peter Anderson - Ghostly Man
- Mick Garris - Boulder Partygoer (uncredited)
- Tebo Nzeku - Sally Campion
- Olivia Cheng - Dr. Sylvia Wen
- Angela Moore - Female Clerk
- Stephen King
- Benjamin Cavell
- Roy Lee
- Lynne Bespflug
- Stephen Welke
- Miri Yoon
- Avy Kaufman
- Mike Mogis
- James Miller
- Jason Lingle
- Nate Walcott
James Marsden interpreta a Stu Redman en la serie.
Odessa Young interpreta a Frannie Goldsmith en la serie.
Alexander Skarsgård hace el papel de Randall Flagg.
Whoopi Goldberg interpreta a Abagail "Mother Abagail" Freemantle en la serie.
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