Joan of Arcadia

Amber Tamblyn

Joan Girardi

Joe Mantegna

Will Girardi

Mary Steenburgen

Helen Girardi

Jason Ritter

Kevin Girardi

Michael Welch

Luke Girardi

Christopher Rodriguez Marquette

Adam Rove

Becky Wahlstrom

Grace Polk

Tara Lynne Barr

Jump-Rope Girl (uncredited)

Sprague Grayden

Judith Montgomery

Vanessa Bell Calloway

Corey Phillips

Christy Carlson Romano

Officious Hall Monitor God

Sam Horrigan

Tommy Belkin

Annie Potts

Lieutenant Lucy Preston

James Russo

James Karon

Lauren C. Mayhew

Elle

Joel McKinnon Miller

Don 'Wood Man' Bicke

Joseph D. Reitman

Record Store Clerk

Jonathan Banks

Sheriff Mike Rakowski