-  Michael Alldredge as Don Horton (3 episodes, season 4) and Steve Jackson (4 episodes, season 8) and Ray King (2 episodes, season 14)
 
-  Barbara Babcock as Liz Craig (16 episodes, seasons 2–5)
 
-  Stephanie Blackmore as Serena Wald (20 episodes, seasons 3, 5–8, 11 and 13)
 
-  Martin E. Brooks as Edgar Randolph (10 episodes, seasons 7–8)
 
-  James L. Brown as Sergeant Harry McSween (41 episodes, seasons 2–12)
 
-  Burke Byrnes as Pete Adams (9 episodes, seasons 8–9)
 
-  George Chakiris as Nicholas (11 episodes, season 9)
 
-  Lois Chiles as Holly Harwood (25 episodes, seasons 6–7)
 
-  Jeff Cooper as Dr. Simon Ellby (19 episodes, seasons 3–4)
 
-  Glenn Corbett as Paul Morgan (18 episodes, seasons 7 and 9–11)
 
-  Karlene Crockett as Muriel Gillis (12 episodes, seasons 2–6)
 
-  Joel Fabiani as Alex Ward (8 episodes, season 4)
 
-  Fern Fitzgerald as Marilee Stone (73 episodes, seasons 2–13)
 
-  Tom Fuccello as Dave Culver (35 episodes, seasons 3–6, 8, 10–11 and 13–14)
 
-  Jeri Gaile as Rose Daniels McKay (20 episodes, seasons 12–14)
 
-  Jonathan Goldsmith as Joe Smith (3 episodes, season 5) and Bruce Harvey (16 episodes, seasons 10 and 12)
 
-  Laurence Haddon as Franklin Horner (17 episodes, seasons 4–6 and 9–10)
 
-  Joshua Harris as Christopher Ewing (112 episodes, seasons 9–14)
 
-  Art Hindle as Jeff Farraday (11 episodes, season 5)
 
-  Alice Hirson as Mavis Anderson (26 episodes, seasons 6–7 and 10–11)
 
-  Deirdre Imershein as Jory Taylor (8 episodes, season 14)
 
-  Barry Jenner as Dr. Jerry Kenderson (25 episodes, seasons 7–9)
 
-  Omri Katz as John Ross Ewing III (152 episodes, seasons 7–14)
 
-  Kenneth Kimmins as Thornton McLeish (11 episodes, seasons 6–7)
 
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-  Fredric Lehne as Eddie Cronin (19 episodes, season 8)
 
-  Arthur Malet as Mr. Forest (3 episodes, season 5) and Ryan (5 episodes, seasons 13–14)
 
-  Shalane McCall as Charlie Wade (102 episodes, seasons 7–11)
 
-  Derek McGrath as Oswald Valentine (15 episodes, seasons 10–11)
 
-  Jim McMullan as Andrew Dowling (14 episodes, season 10)
 
-  Bill Morey as Judge (1 episode, season 5) and Leo Wakefield (11 episodes, season 7–8 and 11)
 
-  Dennis Patrick as Vaughn Leland (19 episodes, seasons 3, 5 and 7–8)
 
-  J. Eddie Peck as Tommy McKay (13 episodes, seasons 12–13)
 
-  George O. Petrie as Harv Smithfield (54 episodes, seasons 3–14)
 
-  Ben Piazza as Walt Discoll (11 episodes, season 6)
 
-  J.A. Preston as Leo Daltry (9 episodes, season 10)
 
-  Dennis Redfield as Roger Larson (12 episodes, season 5)
 
-  Kate Reid as Lil Trotter (17 episodes, seasons 6–7 and 9)
 
-  Deborah Rennard as Sly Lovegren (188 episodes, seasons 5–14)
 
-  Don Starr as Jordan Lee (89 episodes, seasons 2–14)
 
-  Amy Stock as Lisa Alden (16 episodes, season 11)
 
-  Christopher Stone as Dave Stratton (9 episodes, seasons 4 and 8)
 
-  Deborah Tranelli as Phyllis Wapner (147 episodes, seasons 4–14)
 
-  Merete Van Kamp as Grace Van Owen (17 episodes, season 9)
 
-  Hunter von Leer as B.D. Calhoun (10 episodes, season 10)
 
-  Michael Wilding as Alex Barton (9 episodes, season 13)
 
-  Ray Wise as Blair Sullivan (8 episodes, seasons 5–6)
 
-  Morgan Woodward as Marvin "Punk" Anderson (55 episodes, seasons 4–11)
 
-  Gretchen Wyler as Dr. Dagmara Conrad (8 episodes, season 5)
 
-  Kathleen York as Betty (10 episodes, season 8)
 
-  John Zaremba as Dr. Harlen Danvers (13 episodes, seasons 2–3 and 5–10)
 
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