The O.C. Season 3 Characters & Cast — No Spoilers
Every character in The O.C. season 3 with photos and the actors who play them, including Peter Gallagher, Kelly Rowan, Ben McKenzie — spoiler-free, nothing from later seasons.
- Sandy Cohen — played by Peter Gallagher
- Kirsten Cohen — played by Kelly Rowan
- Ryan Atwood — played by Ben McKenzie
- Seth Cohen — played by Adam Brody
- Julie Cooper — played by Melinda Clarke
- Summer Roberts — played by Rachel Bilson
- Marissa Cooper — played by Mischa Barton
- Taylor Townsend — played by Autumn Reeser
- Dr. Neil Roberts — played by Michael Nouri
- Kevin Volchok — played by Cam Gigandet
- Matt Ramsey — played by Jeff Hephner
- Johnny Harper — played by Ryan Donowho
- Dennis 'Chili' Childress — played by Johnny Lewis
- Charlotte Morgan — played by Jeri Ryan
- Kaitlin Cooper — played by Willa Holland
- Sadie Campbell — played by Nikki Reed
- Veronica Townsend — played by Paula Trickey
- Gwen Harper — played by Lisa Rotondi
- Dean Jack Hess — played by Eric Mabius
- Heather — played by Erin Foster
All seasons of The O.C.: full spoiler-free character guide