Larry Hagman John Ross "J.R." Ewing Jr. Actor, Director Patrick Duffy Bobby Ewing Actor Linda Gray Sue Ellen Ewing Actor Victoria Principal Pamela Barnes Ewing Actor Charlene Tilton Lucy Ewing Cooper Actor Barbara Bel Geddes Eleanor Southworth "Miss Ellie" Ewing Actor Steve Kanaly Ray Krebbs Actor Jim Davis John Ross "Jock" Ewing Sr. Actor Ken Kercheval Actor Mary Crosby Actor Randy Powell Actor Keenan Wynn Guest Star Susan Howard Guest Star Laura Johnson Guest Star Sheila Larken Guest Star Jared Martin Guest Star Jeff Cooper Guest Star Martha Scott Guest Star Dennis Patrick Guest Star Don Porter Guest Star Irving J. Moore Director Leonard Katzman Director, Screenwriter Leslie H. Martinson Director Alexander Singer Director Gunnar Hellström Director Camille Marchetta Writer, Screenwriter, Screenwriter Rena Down Writer, Screenwriter Linda Elstad Writer Arthur Bernard Lewis Writer, Screenwriter Barbara Searles Writer David Jacobs Screenwriter