Yo soy Simón

Nick Robinson

Simon Spier

Logan Miller

Martin Addison

Alexandra Shipp

Abby Suso

Katherine Langford

Leah Burke

Jorge Lendeborg Jr.

Nick Eisner

Jennifer Garner

Emily Spier

Josh Duhamel

Jack Spier

Talitha Eliana Bateman

Nora Spier

Keiynan Lonsdale

Abraham 'Bram' Greenfeld

Tony Hale

Mr. Worth

Natasha Rothwell

Ms. Albright

Miles Heizer

Cal Price

Joey Pollari

Lyle

Clark Moore

Ethan

Drew Starkey

Garrett Laughlin

Mackenzie Lintz

Taylor

Cassady McClincy-Zhang

Jackie

Alex Sgambati

Claire

Terayle Hill

Spencer

Haroon Khan

Suraj

Tyler Chase

Aaron

Jamila Thompson

Additional Posse Girl

Patrick Donohue

Math Teacher

Nicholas Stargel

Fantasy Teen

Nancy De Mayo

Mrs. Eisner

Christian Ojore Mayfield

Mr. Eisner

Chantell D. Christopher

Mrs. Suso

Mandy Fason

Mrs. Burke

Philip Covin

Mr. Burke

Campbell Godfrey

Little Man

Emily Jordan

Creekwood Girl

Joshua Mikel

Ride Operator

Robbie Rogers

The Coach

Christopher L. Plunkett

Dancer

Jessi Peralta

Dancer

Carsen Rowe

Dancer

Jonathan Fritschi

Dancer

Matthew Laraway

Dancer

Dylan Cheek

Dancer

Jaidi Ventura

Dancer

Danni Heverin

Dancer

David Copeland Brown Jr.

Tyler (uncredited)

Bryson Pitts

10-Year-Old Simon Spier (uncredited)

Nye Reynolds

5-Year-Old Simon Spier (uncredited)

Skye Mowbray

6-Year-Old Nora Spier (uncredited)

Samantha Bulka

Ethan's Posse (uncredited)

Baz Ma

Ethan's Posse (uncredited)

Natalia Tureta

Ethan's Posse (uncredited)

Briana Estevez

Cheerleader (uncredited)

Jönah-Blainé Bowling

Trendy Jock (uncredited)

Sean O'Donnell

High School Student (uncredited)

Collin McHugh

High School Student (uncredited)

Abigail Houck

High School Student (uncredited)

Jodi Houck

Parent (uncredited)

Josh Royston

Parent (uncredited)

Tyson Love

Football Parent (uncredited)

Jordan Doww

High School Student (uncredited)