Natalie Portman
Celeste Montgomery
Stacy Martin
Eleanor "Ellie" Montgomery
Raffey Cassidy
Young Celeste / Albertine
Christopher Abbott
Journalist
Logan Riley Bruner
Cullen Active
Meg Gibson
Mrs. Montgomery
Daniel London
Father Cliff
Micheál Richardson
Musician
Matt Servitto
Mr. Montgomery
Henry Storrs
The Moderator
Celia Rowlson-Hall
Choreographer
Jordan Friedman
Celeste (Child)
Willem Dafoe
Narrator (voice)
Candace M. Smith
Celeste's Wardrobe Assistant (uncredited)
Chris Banks
Swede (uncredited)
Christopher McLinden
Radio Announcer (uncredited)
Annie Pisapia
Woman on Beach (uncredited)
Natasha Romanova
Reporter (uncredited)