Hawaii Five-O guest stars

861 actors have guest-starred in Hawaii Five-O across 284 episodes and 12 seasons. The most-credited is Harry Endo, Che Fong, Kaspar in 116 episodes. 342 of them have also guest-starred in five or more of the other shows in this catalogue.

Who came back most

Hawaii Five-O guest actors by episode count
Actor	Character	Eps
Harry Endo	Che Fong, Kaspar	116
Richard Denning	Governor Paul Jameson, Philip Grey	76
Al Eben	Doc Bergman, Coroner, Doctor Cohen	51
Peggy Ryan	Jenny Sherman, Mildred	36
Glenn Cannon	Attorney General John Manicote, Carlson, Col. Franklin	32
Douglas Mossman	Detective Frank Kamana, Lt. Kealoha, 2nd Guard	26
Khigh Dhiegh	Wo Fat	16
Tommy Fujiwara	Charlie Ling, Eddie, Frank Okawa	12
Kwan Hi Lim	Tosaki, Chang, Chang Liu	11
Maggie Parker	May	11
Lyle Bettger	Dave DiMarco, Dr. Dimitri Sartain, Dr. Fleming	8
Seth Sakai	Batai, Captain Charles, Dr. Rogers	8
Ed Flanders	Dr. Alexander Kline, Bernie Ross, Byers	7
Nehemiah Persoff	Allie Francis, Cordell, Harry Cardonus	7
Soon-Tek Oh	Chaing, David Chung, Lao	7
Andrew Duggan	Miller, Cliff Morgan, Dr. Karl Rathman	6
Danny Kamekona	Che Fong, Chief Nick, Dr. Holmby	6
Don Knight	Colin Nichols, Dylan Heyward, George Lamb	6
Manu Tupou	Eddie Chu, Abraham Meleha, Cappy Pahoa	6
Morgan White	Attorney General Walter Stewart	6
Ross Martin	Tony Alika	6
Bill Bigelow	Andrew Beaufort, Dr. Logan, Lester Cronin	5
Bill Edwards	Jonathan Kaye, Dr. Herbert Ventnor, Frank Wellman	5
James Olson	Bart Mariss, Bernie Brown, Dr. Kenneth Ames	5
Jimmy Borges	Big Mardo, Jimmy Borges, Kum Chi	5

Hawaii Five-O guest stars by season

Guest actors per season of Hawaii Five-O
Season	Guests	Who
Season 1	117	Maggie Parker, Richard Denning, Morgan White, Douglas Mossman, Andrew Duggan, David Sheiner, Gavin MacLeod, Gerald S. O'Loughlin, Joanne Linville, Khigh Dhiegh, Nancy Kwan, Nancy Malone and 105 more
Season 2	114	Peggy Ryan, Richard Denning, Harry Endo, Loretta Swit, Bill Bigelow, Bruce Wilson, Dana Elcar, Douglas Mossman, Ed Flanders, James Hong, Joseph Sirola, Julie Gregg and 102 more
Season 3	107	Harry Endo, Peggy Ryan, Richard Denning, Barry Atwater, Khigh Dhiegh, Daws Dawson, Don Chastain, Elliott Street, John McMartin, Norman Dupont, Pernell Roberts, Roger C. Carmel and 95 more
Season 4	94	Harry Endo, Al Eben, Peggy Ryan, Richard Denning, Glenn Cannon, Bill Edwards, Danny Kamekona, Khigh Dhiegh, Kwan Hi Lim, Tommy Fujiwara, Alan Vint, Albert Paulsen and 82 more
Season 5	92	Harry Endo, Al Eben, Glenn Cannon, Richard Denning, Harold Gould, John Stalker, Kwan Hi Lim, Luther Adler, Elizabeth Cole, Jack Hogan, John Farias, Ray Buktenica and 80 more
Season 6	88	Harry Endo, Al Eben, Richard Denning, Glenn Cannon, Douglas Mossman, Kwan Hi Lim, Richard Angarola, A Martinez, Alan Fudge, Alfred Avallone, Allen Reisner, Andrew Duggan and 76 more
Season 7	88	Harry Endo, Douglas Mossman, Al Eben, Glenn Cannon, Peggy Ryan, Richard Denning, Bruce Boxleitner, Linda Ryan, Tommy Fujiwara, Abe Vigoda, Alan Fudge, Barbara Eda-Young and 76 more
Season 8	83	Harry Endo, Al Eben, Glenn Cannon, Peggy Ryan, Richard Denning, Biff McGuire, Bill Edwards, Donna Mills, Keokeokalae Hughes, Khigh Dhiegh, Lloyd Bochner, Adam Arkin and 71 more
Season 9	115	Harry Endo, Richard Denning, Al Eben, Amanda McBroom, Barry Russo, Glenn Cannon, Jimmy Borges, David Tomlinson, Dina Merrill, Khigh Dhiegh, Kwan Hi Lim, Michael Anderson Jr. and 103 more
Season 10	133	Richard Denning, Beau van den Ecker, Douglas Mossman, Edward Sheehan, Ernest Chang, Harold Iseke, Keokeokalae Hughes, Kimo Kahoano, Lyle Bettger, Aharon Ipalé, Al Lopaka, Alan Oppenheimer and 121 more
Season 11	108	Richard Denning, Ross Martin, Antony Ponzini, Barry Bostwick, Bob Sevey, Chuck Couch, Fred Ball, George Lazenby, James Darren, John Zenda, Lawrence Dobkin, Manu Tupou and 96 more
Season 12	102	Richard Denning, Ross Martin, Barbara Luna, Harry Guardino, Joe Moore, Lloyd Bochner, Lyle Bettger, Patricia Herman, Paul L. Smith, Peter Kalua, Rodney Philip Aiu, Terence Knapp and 90 more

Guest stars you know from somewhere else

The hardest-working character actors in this show's guest cast, ranked by how many other shows in this catalogue they have also guest-starred in. Not the most famous names, the most prolific ones.

Hawaii Five-O guest stars who appear in other shows
Actor	In Hawaii Five-O	Other shows
George Wyner	Allen Sherick	41
John Rubinstein	Harold, Joey Kalima	40
James Hong	Eric Ling, James Watanu, Soong Chien	38
Clyde Kusatsu	Jerry Quan	34
Alan Fudge	Ben Dawson, Joe Burdick, Paul Hamilton	32
Lawrence Pressman	Calvin Cutler	32
William Windom	Harlan Henderson, Ossie Connors	25
Lou Richards	Draper Taggart, George Atkins, Jim Thompson	21
William Schallert	Craig Wilkie	21
Nehemiah Persoff	Allie Francis, Cordell, Harry Cardonus	20
Paul Collins	Charlie	20
Jonathan Goldsmith	George Barker, Malcolm Vaughn	19
Adam Arkin	Alex Scofield	19
Alan Oppenheimer	Bernie Fryer	19
Edward Asner	August March	19

Played more than one character

Hawaii Five-O actors credited under several characters
Actor	Characters	Eps
Douglas Mossman	Detective Frank Kamana, Lt. Kealoha, 2nd Guard	26
Tommy Fujiwara	Charlie Ling, Eddie, Frank Okawa	12
Kwan Hi Lim	Tosaki, Chang, Chang Liu	11
Lyle Bettger	Dave DiMarco, Dr. Dimitri Sartain, Dr. Fleming	8
Seth Sakai	Batai, Captain Charles, Dr. Rogers	8
Soon-Tek Oh	Chaing, David Chung, Lao	7
Ed Flanders	Dr. Alexander Kline, Bernie Ross, Byers	7
Nehemiah Persoff	Allie Francis, Cordell, Harry Cardonus	7
Don Knight	Colin Nichols, Dylan Heyward, George Lamb	6
Al Eben	Doc Bergman, Coroner, Doctor Cohen	51

Shares a cast with

Hawaii Five-O and Murder, She Wrote — 173 shared actors
Hawaii Five-O and Mission: Impossible — 157 shared actors
Hawaii Five-O and Fantasy Island — 130 shared actors
Hawaii Five-O and Magnum, P.I. — 126 shared actors
Hawaii Five-O and Gunsmoke — 122 shared actors
Hawaii Five-O and Charlie's Angels — 116 shared actors
Hawaii Five-O and The Love Boat — 111 shared actors
Hawaii Five-O and Perry Mason — 104 shared actors

Cast data from TVmaze, licensed CC BY-SA 4.0.