The Mountain

Tye Sheridan

Andy

Jeff Goldblum

Dr. Wallace Fiennes

Hannah Gross

Susan

Denis Lavant

Jack

Udo Kier

Frederick

Eléonore Hendricks

Grace

Annemarie Lawless

Vivian

Margot Klein

Peggy

Larry Fessenden

Meals

Alyssa Bresnahan

Claire

Billy Thomas Myott

Orderly

Laura Stisser

Woman Getting Out of Car

Magdalyn Donnelly

Skater Mom

Sonia Conlin

Asylum Patient

Scott Matheny

Psychiatrist

Buddy Duress

Philip Farmer

Mike D Harris

Diner Patron (uncredited)

Adam Daveline

Hospital Doctor

Dannielle Rose

Asylum Patient (uncredited)