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 John Crawford Sheriff Ep Bridges Actor Cynthia Eilbacher Guest Star Arthur Peterson Guest Star Jay Ripley Guest Star Gino Conforti Guest Star Billy Barty Guest Star Kelton Garwood Guest Star Lee Rich Executive Producer Robert L. Jacks Producer Alf Kjellin Director