Angourie Rice as Honor Rose

Gaten Matarazzo as Michael Dipnicky

Christopher Mintz-Plasse as Mr. Calvin

Armani Jackson as Travis Biggins

Amy Keum as Kennedy Park

Ben Jackson Walker as Gary

Kelcey Mawema as Talia

Avery Konrad as Emma

Michael P. Northey as Marvin Rose

Kerry Butler as Janet Rose

Andres Collantes as Diesel

Danny Wattley as Coach Biggins

Candice Hunter as Ms. Felson

Arghavan Jenati as Lily / Miss Chugani

Miku Martineau as Christine

Jason Sakaki as Brad

Zoë Christie as Grace

Matreya Monro as Ms. Dipnicky

Porsha Teo as Foster Girl

Robyn Driscoll as Old Man

Samuel Braun as Young Man in Bar

Brendan McRae as Potential Date #1

Connor Wong as Potential Date #2

Christian Lagasse as Potential Date #3 - Mike

Marlee Walchuk as Sally

Daniel Desveaux as Dipnicky's Dad

Stewart Prince as Howie Kaplan

Henry C. King as Young Coach Biggins

June B. Wilde as Bowling Alley Server

Sophia Bucior as Young Ms. Felson

Julien Naud as Theater Student #1

Darian Mark as Theater Student #2

Beta Chan as Theater Student #3

Maia Cervellin as Theater Student #4

Valin Shinyei as Theater Student #5

Hannah Cam as Play Dancer #1

Ryan Maw as Play Dancer #2

Malia McMullen as Play Dancer #3

Jenna Homan as Play Dancer #4

Marlee Grace Becker as Play Dancer #5

Vanessa Prasad as Doreen Leddy (uncredited)