Greasers:
- Ponyboy Curtis: The protagonist and narrator of the novel. He is a small, intelligent boy who is artistic and sensitive.
- Sodapop Curtis: Ponyboy's older brother. He is a cheerful and outgoing boy who loves cars.
- Darry Curtis: Ponyboy's oldest brother. He is a responsible and protective big brother who works hard to support his family.
- Johnny Cade: Ponyboy's friend. He is a shy and troubled boy who has had a rough upbringing.
- Two-Bit Mathews: A member of the Greasers. He is a sarcastic and funny boy who is always getting into trouble.
Socs (Socials):
- Bob Sheldon: A member of the Socs. He is a wealthy, arrogant, and violent boy who often picks on the Greasers.
- Randy Adderson: A member of the Socs. He is a more moderate and reasonable Soc who tries to stop the violence between the Greasers and Socs.
- Cherry Valance: A Soc girl who is interested in Ponyboy. She is intelligent, kind, and sensitive.
Other Characters:
- Dallas "Dally" Winston: A tough, rebellious Greaser who has been in trouble with the law. He is a mentor and guardian to the younger Greasers.
- Tim Shepard: A police officer who is friends with the Curtis brothers. He is wise and understanding, and he tries to help the Greasers.