cast
-
Jacob Tremblay
Auggie
-
Julia Roberts
Isabel
-
Owen Wilson
Nate
-
Izabela Vidovic
Via
-
Noah Jupe
Jack Will
-
Millie Davis
Summer
-
Bryce Gheisar
Julian
-
Mandy Patinkin
Mr. Tushman
-
Danielle Rose Russell
Miranda
-
Daveed Diggs
Mr. Browne
-
Mark Dozlaw
Teenage Doctor
-
Rukiya Bernard
Nurse
- Jennifer March Neonatologist
-
Elle McKinnon
Charlotte
-
Ty Consiglio
Amos
-
Kyle Breitkopf
Miles
-
James A Hughes
Henry
- J. Douglas Stewart Darth Sidious
-
Ali Liebert
Ms. Petosa
- Joseph Gordon Dodgeball Player
-
Cameron Roberts
Cute Guy
- Erika McKitrick Ella
-
Nadji Jeter
Justin
-
Ben Immanuel
Mr. Davenport
-
Jason McKinnon
School Photographer
- Izzy Lieberman Reid
- Hannah Hoberman Rebecca
- Michael Alan Healy Chewbacca
-
Sonia Braga
Grans
-
Nicole Oliver
Jack Will's Mom
-
Emily Delahunty
Ximena Chin
- Lucia Thain Savanna
-
Sasha Neuhaus
Maya
-
Rachel Hayward
Miranda's Mom
- Callahan Brebner Guy on Bus
- Caleb Gordon Our Town Player
-
Grayson Maxwell Gurnsey
Our Town Player
- Emily Giannozio Our Town Player
- Haley Goldin Our Town Player
- Maccie Margaret Chbosky Via (Age 4)
- Victoria V. Cruz Science Fair Judge
-
Yan-Kay Crystal Lowe
Julian's Mom
-
Steve Bacic
Julian's Dad
-
Jason Tremblay
Camp Counsellor
- William Dickinson Eddie
-
Emma Tremblay
Michelle
- Armen Bagdasarov Danny
-
Lidya Jewett
Lina Annan
- Kaelyn Breitkopf Angela
- Brayden Snow Classmate (uncredited)
-
Andre Robinson
School Kid (uncredited)
- Alyssa Andronyk School Kid (uncredited)
- Wilson Chieng Simon Stimson (uncredited)
- Dallas Snow Classmate (uncredited)
- Justin Snow Classmate (uncredited)
- Kayzhia Snow Classmate (uncredited)
- Amber Snow Classmate Parent (uncredited)
- Elayna Sing Classmate (uncredited)
- Ann Evans Parent (uncredited)
- Abigail Friend Daughter at Coney Island Beach (uncredited)
- Razvan Orban Boy in Red (uncredited)
- Kari Staten Parent (uncredited)