The Vanishing of Sidney Hall

Michelle Monaghan

Mrs. Hall

Alex Karpovsky

Mr. Bauer

Kyle Chandler

The Searcher

Janina Gavankar

Gina

Nathan Lane

Harold

David Alan Basche

Senator Dale

Lora Martinez-Cunningham

Hospital Administrator

John Trejo

Police Officer

Elle Fanning

Melody

Tim Blake Nelson

Johan

Yahya Abdul-Mateen II

Duane

Christine Devine

News Anchor

Richard Beal

Town Cowboy (uncredited)

Kelly V. Lucio

Patient (uncredited)

Daniel Morgan Shelley

Officer 1

Sean Cullen

Judge Newport

Michael Drayer

Max

Darren Pettie

Gerald Hall

Logan Lerman

Sidney Hall

Margaret Qualley

Alexandra

Christina Brucato

Jeanine

Fredrick Lopez

Inmate

Blake Jenner

Brett Newport

Will MacAdam

Senior Librarian (uncredited)

Cassandra Rochelle Fetters

Reporter (uncredited)

Fatima Ptacek

Self (uncredited)

Azumi Tsutsui

Japanese Interviewer

Michael Chen

Lewis

Jazzy Kae

Lab Partner

Peter Francis James

Dr. Baum

Sasha Hutchings

Harold's Secretary

Mercedes Herrero

Mrs. Sennett

Shawn Christensen

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Michael D. Joseph

Carnival Goer (uncredited)

Fredi Walker-Browne

Head Nurse

Avery Whitted

Henry Crowe

Ariane Rinehart

Darcy

Irania Reyes

Girl

Ruben Rivera Laguna

Deputy

Charlie Le Grice

Reporter 1

Zakiya Young

Reporter 2

Jason Tottenham

Reporter 3

Lee Garrett

Officer 2

Ryan Willard

Student

Adrian Acosta

Hospital Staff (uncredited)

Ludovic Coutaud

Carnival Goer (uncredited)

William Greely

Boom Operator / Cameraman (uncredited)

Hannah Hartwell

High School Student (uncredited)

Stephanie Purpuri

Cocktail Party Admirer (uncredited)

Cris Williams

Student (uncredited)