Richard Thomas John Boy Walton Actor, Director Ralph Waite John Walton Actor, Director 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 Merie Earle Guest Star Joe Conley Ike Godsey Actor Ronnie Claire Edwards Corabeth Godsey Actor Mary Jackson Emily Baldwin Actor Helen Kleeb Mamie Baldwin Actor Paul Jenkins Guest Star Nora Marlowe Guest Star Mariclare Costello Guest Star Robert Donner Guest Star Lee Rich Executive Producer Earl Hamner Jr. Executive Producer Andy White Producer Robert L. Jacks Producer Harry Harris Director Harvey Laidman Director Alf Kjellin Director Ivan Dixon Director Richard C. Bennett Director Larry Dobkin Director