The Vanishing of Sidney Hall

Logan Lerman

Sidney Hall

Elle Fanning

Melody

Kyle Chandler

The Searcher

Michelle Monaghan

Mrs. Hall

Blake Jenner

Brett Newport

Nathan Lane

Harold

Margaret Qualley

Alexandra

Yahya Abdul-Mateen II

Duane

Tim Blake Nelson

Johan

Janina Gavankar

Gina

Darren Pettie

Gerald Hall

Alex Karpovsky

Mr. Bauer

Michael Chen

Lewis

Avery Whitted

Henry Crowe

Ariane Rinehart

Darcy

Sean Cullen

Judge Newport

Mercedes Herrero

Mrs. Sennett

Lora Martinez-Cunningham

Hospital Administrator

Sasha Hutchings

Harold's Secretary

Peter Francis James

Dr. Baum

Christine Devine

News Anchor

Fredi Walker-Browne

Head Nurse

Fredrick Lopez

Inmate

Jazzy Kae

Lab Partner

Irania Reyes

Girl

Christina Brucato

Jeanine

Azumi Tsutsui

Japanese Interviewer

John Trejo

Police Officer

Ruben Rivera Laguna

Deputy

Charlie Le Grice

Reporter 1

Zakiya Young

Reporter 2

Jason Tottenham

Reporter 3

Daniel Morgan Shelley

Officer 1

Lee Garrett

Officer 2

David Alan Basche

Senator Dale

Michael Drayer

Max

Ryan Willard

Student

Adrian Acosta

Hospital Staff (uncredited)

Richard Beal

Town Cowboy (uncredited)

Ludovic Coutaud

Carnival Goer (uncredited)