Richard Thomas John Boy Walton Actor, Director Ralph Waite John Walton Actor Michael Learned Olivia Walton Actor Will Geer Zeb "Grandpa" Walton Actor Ellen Corby Esther "Grandma" Walton Actor Judy Norton Mary Ellen Walton Willard Actor Jon Walmsley Jason Walton Actor Mary Beth McDonough Erin Walton Actor Eric Scott Ben Walton Actor David W. Harper Jim-Bob Walton Actor Kami Cotler Elizabeth Walton Actor Joe Conley Ike Godsey Actor Erin Moran Guest Star Doney Oatman Guest Star James Gammon Guest Star Britt Leach Guest Star Wilford Brimley Guest Star Mary Jo Catlett Guest Star Mayf Nutter Guest Star Lee Rich Executive Producer Robert L. Jacks Producer