Tom Selleck
Thomas Magnum (162 eps)
John Hillerman
Jonathan Higgins (162 eps)
Roger E. Mosley
Terry "TC" Calvin (162 eps)
Larry Manetti
Rick Wright (162 eps)
Gillian Dobb
Agatha Chumley (22 eps)
Sharon Stone
Diane Dupres / Deirdre Dupres (4 eps)
George Cheung
Choi (3 eps)
Denny Miller
Leon Platt (3 eps)
June Chadwick
English Flight Attendant (3 eps)
Moe Keale
Kaholo (3 eps)
Carolyn Seymour
Elizabeth, Lady Ashley (3 eps)
Margie Impert
Madeline Jones (3 eps)
Kathleen Lloyd
Carol Baldwin (3 eps)
Anne Lockhart
Brenda McCutchen / Cassie McCutchen (2 eps)
Margaret Lacey
Mrs. Ridley (2 eps)
Pamela Salem
Alyce (2 eps)
Ernest Borgnine
Earl Gianelli / 'Mr. White Death' (2 eps)
Peter Davison
Ian MacKerras (2 eps)
Arthur English
Newspaper Seller (2 eps)
Julian Glover
Duncan Scott / Police Inspector Stokesay (2 eps)
Joseph Long
Commander Ocho (2 eps)
Geoffrey Beevers
Mortuary Attendant (2 eps)
Glenn Cannon
Dr. Ibold (2 eps)
Irene Yah-Ling Sun
Mitsu McWilliams (2 eps)
Judi Andersen
Sandy (2 eps)
Al Harrington
Mano (1 eps)
Ed Lauter
Captain Quintin (1 eps)
Amanda McBroom
Country Singer (1 eps)
Guy Stockwell
Dick McWilliams (1 eps)
John Fujioka
Nishimoto (1 eps)
Susan Oliver
Laurie Crane (1 eps)
Greg Mullavey
Charlie Amos (1 eps)
Jameson Parker
A.J. Simon (1 eps)
Lee Patterson
Drew Danforth (1 eps)
Shannen Doherty
Ima Platt (1 eps)
Rosemary Murphy
Marion Danforth (1 eps)
Dennis Weaver
Lacy Fletcher (1 eps)
Frank Sinatra
Retired Police Sergeant Michael Doheny (1 eps)
Alan Trammell
Alan Trammell (1 eps)
Morgan Fairchild
Catherine Hailey / Alex Houston (1 eps)
Barbara Kelly
Woman on Boat (1 eps)
Ann Dusenberry
Katrina Tremaine (1 eps)
Andy McDermott
Colin Francis (1 eps)
Linda Grovenor
Rebecca Jane 'Becky' Damon (1 eps)
Shannon Wilcox
Diana Franklin / Holly Berry (1 eps)
Rex Ryon
Dan Davis (1 eps)
Gerald McRaney
Rick Simon (1 eps)
Taylor Wily
Guy Outside Pool Hall (1 eps)
Robert Whiting
Claude (1 eps)
Donald Gibb
Condley Willard (1 eps)
Barbara Sinclair
Wanda (1 eps)
Todd Camenson
Bartender (1 eps)
Chuck Hicks
Thug (1 eps)
Lou Whitaker
Lou Whitaker (1 eps)
Bernie Pock
Young Higgins, in World War II (1 eps)
Pamela Jean Bryant
Marge (1 eps)
Benjamin Feitelson
Moroccan Ticket Agent (1 eps)
Ruddy L. Davis
Moroccan Butler (1 eps)
Lesa Lockford
Airline Stewardess (1 eps)
Kendall McLean
Mother on Airplane (1 eps)
Nayef Rashed
Waiter #1 (1 eps)
Alix Refaie
Waiter #2 (1 eps)
John Newbury
Minister (1 eps)
Stanley Davies
Hotel Clerk (1 eps)
Hugh Beverton
Hotel Clerk (1 eps)
Peter Sands
Security Guard (1 eps)
Jacob Dylan Thomas
Boy on Airplane (1 eps)
Craig Crosbie
Bagpipe Player (1 eps)
Christopher Duffy
Higgins at 18 (1 eps)
Darren Bakal
Higgins at 6 (1 eps)
Daniel Chapman
Boy in Sailor Suit (1 eps)
Marc Boyle
Scorpio 6 Agent (1 eps)
Red Crandall
Robin Masters (voice) (1 eps)
Marta Kober
Mary Elizabeth (1 eps)
Carole Kai
Car Rental Agent (1 eps)
Kwan Hi Lim
Lieutenant Tanaka (1 eps)
Reri Tava Jobe
Gloria (1 eps)
Esmond Chung
George - Security Guard (1 eps)
Robin Strand
Young Drew Danforth (1 eps)
Michael Hasegawa
Ito (1 eps)
Earl Kingston
Maitre d' (1 eps)
Bill Verdier
Dr. Trippett (1 eps)
Harland Reed
Bartender (1 eps)