Richard Thomas John Boy Walton Actor 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 David Clarke Guest Star Hank Stohl Guest Star Michael O'Keefe Guest Star Merie Earle Guest Star Vernon Weddle Guest Star David Hooks Guest Star Ruth Manning Guest Star Lee Rich Executive Producer Earl Hamner Jr. Executive Producer Andy White Producer Harry Harris Director