Ray Corasani as Ayoub

Spencer Stone as Spencer

Anthony Sadler as Anthony

Alek Skarlatos as Alek

Judy Greer as Joyce Eskel

Jenna Fischer as Heidi Skarlatos

William Jennings as Young Spencer

Paul-Mikél Williams as Young Anthony

Bryce Gheisar as Young Alek

Thomas Lennon as Principal Michael Akers

P.J. Byrne as Mr. Henry

Jaleel White as Garrett Walden

Tony Hale as Coach Murray

Robert Pralgo as Mr. Skarlatos

Alisa Allapach as Lisa

Jeanne Goursaud as Lea

Ethan Rains as Ben Zomerdyk

Seth Meriwether as Francis

Irene White as Elementary Teacher

Julianne Binard as Jennifer

Alix Bénézech as Server

Lillian Solange Beaudoin as Carolyn

Matt J. Thompson as Man on Train

Camille Razat as Train Attendant #1

Braxton Bjerken as Everett Stone (uncredited)

Camden Haydon as Basketball Kid (uncredited)

Cole Eichenberger as Young Spencer Stone (uncredited)

Elena Campbell-Martinez as Professor

Stephen Matthew Smith as Classmate #1 (as Stephen Smith)