Nick Robinson

Simon

Jennifer Garner

Emily

Josh Duhamel

Jack

Katherine Langford

Leah

Alexandra Shipp

Abby

Logan Miller

Martin

Keiynan Lonsdale

Bram

Jorge Lendeborg Jr.

Nick

Talitha Eliana Bateman

Nora

Tony Hale

Mr. Worth

Natasha Rothwell

Ms. Albright

Miles Heizer

Cal

Joey Pollari

Lyle

Clark Moore

Ethan

Drew Starkey

Garrett

Mackenzie Lintz

Taylor

Cassady McClincy-Zhang

Jackie

Alex Sgambati

Terrible Liar Girl

Jamila Thompson

Additional Posse Girl

Emily Jordan

Creekwood Girl

Patrick Donohue

Math Teacher

Terayle Hill

Spencer

Tyler Chase

Aaron

Haroon Khan

Suraj

Joshua Mikel

Ride Operator

Nicholas Stargel

Fantasy Teen

Nancy De Mayo

Nick's Mom

Christian Ojore Mayfield

Nick's Dad

Chantell D. Christopher

Abby's Mom

Mandy Fason

Leah's Mom

Philip Covin

Leah's Dad

Robbie Rogers

The Coach

Christopher L. Plunkett

Dancer

Carsen Rowe

Dancer

Ahmed Zakzouk

Dancer

Jaidi Ventura

Dancer

Ivan A. Gomez

Dancer

Dylan Cheek

Dancer

Danni Heverin

Dancer

Bryson Pitts

10-Year-Old Simon Spier (uncredited)

Nye Reynolds

5-Year-Old Simon Spier (uncredited)

Samantha Bulka

Ethan's Posse (uncredited)

Baz Ma

Ethan's Posse (uncredited)

Sean O'Donnell

High School Student (uncredited)

Josh Royston

Parent (uncredited)

Tyson Love

Football Parent (uncredited)