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 Mary Beth McDonough Erin Walton Actor Eric Scott Ben Walton Actor David W. Harper Jim-Bob Walton Actor Kami Cotler Elizabeth Walton Actor Merie Earle Guest Star John Mitchum Guest Star Lee Purcell Guest Star Tom Bower Guest Star Lee Rich Executive Producer Earl Hamner Jr. Executive Producer Robert L. Jacks Producer Harvey Laidman Director