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