Richard Thomas John Boy Walton Actor Ralph Waite John Walton Actor Michael Learned Olivia Walton Actor Will Geer Zeb "Grandpa" 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 Alexis Jacks Guest Star Kim O'Brien Guest Star Tim Haldeman Guest Star Dennis Kort Guest Star George Wallace Guest Star Earl Hamner Jr. Executive Producer Lee Rich Executive Producer