Mark McCain is son of the rancher Lucas McCain in the ABC Western television series The Rifleman that ran from 1958 to 1963. The part was portrayed by singer/actor and former Mousketeer Johnny Crawford, who was nominated for an Emmy Award in 1959 as Best Supporting Actor (Continuing Character) in a Dramatic Series. He lost the designation to Dennis Weaver, then portraying Chester Goode on CBS's Gunsmoke.