| A | B |
|---|
| Auggie Pullman | Auggie is a ten-year-old boy who was born with a facial deformity. |
| Via Pullman | Auggie's older sister, Via, sometimes feels like the less important child in her family, since everyone often puts Auggie's needs first. |
| Isabel Pullman | Auggie's mother, who loves Auggie deeply and truly wants the best for him, so much so that she can be overprotective. |
| Nate Pullman | Auggie's father, who has a special relationship with Auggie and wants to protect him, but recognizes that it is important that Auggie grow up and mature. |
| Summer Dawson | Auggie's other close friend at school. Summer sits down with Auggie at lunch on the first day, initially because she feels sorry for him |
| Jack Will | A boy at school whom Mr. Tushman asks to reach out and be friends with Auggie. |
| Julian Albans | The story's main antagonist: a kid at school who is consistently rude to Auggie |
| Tushman | The principal of Beecher Prep, who always knows what is going on in the school and tries his best to make it an open, welcoming place for Auggie. |
| Justin | Via's new boyfriend, who comes from a family of divorced parents and really loves the closeness of the Pullman household. |
| Miranda | Via's former best friend, who broke ties with Via over the summer after she lied and pretended to have a deformed brother while at camp. Miranda has always been extremely close to Auggie |
| Ella | Along with Miranda, Via's other old best friend, who also broke ties with Via over the summer. |
| Christopher | One of Auggie's few old friends, who moved away to Connecticut. Auggie does not get to see him very often. |
| Zachary | One of Auggie's old friends. |
| Alex | One of Auggie's old friends. |
| Garcia | The office assistant at Beecher Prep. |
| Charlotte | One of the kids at school who first shows Auggie around. Charlotte is known as a "goody two shoes" |
| Browne | The fifth grade English teacher. Mr. Browne writes monthly precepts on the board -- motivational messages usually meant to encourage students |
| Petosa | Auggie's homeroom teacher. |
| Savanna | A popular girl at school, who hosts a Halloween party that Summer is invited to attend. |
| Henry | One of the kids at school who initially hangs out with Julian, but eventually helps Auggie out when Auggie gets in a fight at the nature reserve. |
| Grans | Isabel Pullman's mother, and Auggie and Via's deceased grandmother. |
