Lorne Greene Ben Cartwright Actor Michael Landon Little Joe Cartwright Actor Dan Blocker Eric "Hoss" Cartwright Actor Pernell Roberts Adam Cartwright Actor Margaret Hayes Guest Star John Alderson Guest Star Robert Ridgely Guest Star Dan Sheridan Guest Star Orville Sherman Guest Star Mike Ross Guest Star Norman Leavitt Guest Star James W. Lane Executive Producer David Dortort Producer William Cox Writer Robert Sparr Director