Cast (in credits order)

John Forsythe .... Blake Carrington (original cast)
Linda Evans .... Krystle Grant Jennings Carrington (1981-1989) (original cast)/Rita Lesley (1985-1986)
Joan Collins .... Alexis Morell Carrington Colby Dexter Rowan (# 2) (1981-1989)
John James .... Jeff Colby (1981-1985, 1986, 1987-1989) (original cast)
Pamela Sue Martin .... Fallon Carrington Colby (1981-1984) (original cast)
Emma Samms .... Fallon Carrington Colby (#2) (1985, 1987-1989)
Al Corley .... Steven Carrington #1 (1981-1982) (original cast)
Jack Coleman .... Steven Carrington #2 (1982-1988)
Gordon Thomson .... Adam Carrington (1982-1989)
Michael Nader .... Dex Dexter (1983-1989)
Pamela Bellwood .... Claudia Blaisdel Carrington (1981-1982, 1983-1986) (original cast)
Catherine Oxenberg .... Amanda Bedford Carrington (#1) (1984-1986)
Karen Cellini .... Amanda Bedford Carrington (#2) (1986-1987)
Leann Hunley .... Dana Waring Carrington (1986-1988)
Lloyd Bochner .... Cecil Colby (1981-1982)
Diahann Carroll .... Dominique Deveraux (1984-1987)
Stephanie Beacham .... Sable Colby (1988-1989)
Christopher Cazenove .... Ben Carrington (1986-1987)
Heather Locklear .... Sammy Jo Dean Carrington (1981-1989)
Kate O'Mara .... Cassandra 'Caress' Morrell (1986)
Lee Bergere .... Joseph Anders (1981-1983)
Kathleen Beller .... Kirby Anders Colby (1982-1984)
Tracy Scoggins .... Monica Colby (1989)
Maxwell Caulfield .... Miles Colby (1985-1986)
Terri Garber .... Leslie Carrington Saunders (1987-1988)
James Healey .... Sean Rowan (1987-1988)
Bo Hopkins .... Matthew Blaisdel (1981, 1987) (original cast)
Wayne Northrop .... Michael Culhane (1981, 1986-1987) (original cast)
Geoffrey Scott .... Mark Jennings (1982-1985)
Ted McGinley .... Clay Fallmont (1986-1987)
Rock Hudson .... Daniel Reece (1984-1985)
Ali MacGraw .... Lady Ashley Mitchell (1985)
George Hamilton .... Joel Abrigore (1985-1986)
Michael Praed .... Prince Michael of Moldavia (1985-1986)
Helmut Berger .... Peter De Vilbis (1983-1984)
Deborah Adair .... Tracy Kendall (1983-1984)
James Farentino .... Dr. Nick Toscanni (1981-1982)
Ken Howard .... Garrett Boydston (1985-1986)
Cassie Yates .... Sarah Curtis (1987)
Billy Dee Williams .... Brady Lloyd (1984-1985)
Dale Robertson .... Walter Lankershim (1981) (original cast)
Katy Kurtzman .... Lindsay Blaisdel (1981) (original cast)
rest of cast listed alphabetically:
Ray Abruzzo .... Sgt. John Zorelli (1988-1989)
Christopher Allport .... Jesse Atkinson (1987-1988)
Richard Anderson .... Sen. Buck Fallmont (1986-1987)
Kerry Armstrong .... Elena, Duchess of Branagh (1985-1986)
Lou Beatty Jr. .... Rudy Richards (1988-1989)
William Beckley .... Gerard (1984-1989)
Kevin Bernhardt .... Father Tanner McBride (1989)
Troy Beyer .... Jackie Deveraux (1986-1987)
Brandon Bluhm .... Blake Jeffrey "L.B." Carrington Colby (#3) (1987-1989)
Hank Brandt .... Morgan Hess (1982-1988)
Janet Brandt .... Mrs. Gordon (1983-1984)
Paul Burke .... Neal McVane (1982-1984, 1987)
Justin Burnette .... Danny Carrington, Jr. #3 (1988-1989)
Bill Campbell .... Luke Fuller (1984-1985) (as William Campbell)
Kevin Conroy .... Bart Fallmont (1985-1986)
Pat Crowley .... Emily Fallmont (1986)
Jon Cypher .... Dirk E. Maurier (1983, 1987)
George DiCenzo .... Charles Dalton (1984-1985) (as George Di Cenzo)
Shay Duffin .... Joseph the Butler (1981)
Stephanie Dunnam .... Karen Atkinson (1987-1988)
Joel Fabiani .... King Galen of Moldavia (1985-1986)
Cheyenne Fitch .... Fallon Carrington (1989)
Grant Goodeve .... Chris Deegan (1983, 1987)
Betty Harford .... Hilda Gunnerson
Virginia Hawkins .... Jeanette Robbins
Jim Ishida .... Lin (1984-1987)
Paul Keenan .... Tony Driscoll (1982-1984)
Matthew Lawrence .... Danny Carrington, Jr. #1 (1984-1985)
Richard Lawson .... Nick Kimball (1986-1987)
Timothy McNutt .... Blake Jeffrey "L.B." Carrington Colby (#1) (1984-1985)
Liza Morrow .... Virginia Metheny (1988-1989)
Ashley Mutrux .... Blake Jeffrey "L.B." Carrington Colby (#2) (1985)
J. Eddie Peck .... Roger Grimes (1988-1989)
Ben Piazza .... Charles Hampton (1984-1985)
Jessica Player .... Krystina Carrington (1985-1989)
Peter Mark Richman .... Andrew Laird (1981-1984)
Jameson Sampley .... Danny Carrington, Jr. #2 (1985-1988)
John Saxon .... Rashid Ahmed (1982-1984)
Susan Scannell .... Nicole Simpson DeVilbis (1984-1985)
Tom Schanley .... Josh Harris (1988)
James Sutorius .... Gordon Wales (1984-1988)
Kim Terry .... Joanna Clauss/Sills (1988-1989) (as Kim Terry-Costin)
Kenneth Tigar .... Fritz Heath (1988-1989)