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 Mary Jackson Emily Baldwin Actor Helen Kleeb Mamie Baldwin Actor Joe Conley Ike Godsey Actor Ronnie Claire Edwards Corabeth Godsey Actor John Crawford Sheriff Ep Bridges Actor Asta Hansen Guest Star John Fink Guest Star Tom Bower Guest Star Wayne Heffley Guest Star Arthur Malet Guest Star Alan Fudge Guest Star Lee Rich Executive Producer Earl Hamner Jr. Executive Producer Andy White Producer Walter Alzmann Director