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 Ronnie Claire Edwards Corabeth Godsey Actor Mary Jackson Emily Baldwin Actor Helen Kleeb Mamie Baldwin Actor Basil Hoffman Guest Star Nora Marlowe Guest Star Cynthia Eilbacher Guest Star Mariclare Costello Guest Star John Ritter Guest Star Lee Rich Executive Producer Earl Hamner Jr. Executive Producer Robert L. Jacks Producer Harry Harris Director