Magnum P.I. guest stars

951 actors have guest-starred in Magnum P.I. across 96 episodes and 5 seasons. The most-credited is Christopher Thornton, Kenny "Shammy" Shamberg in 27 episodes. 279 of them have also guest-starred in five or more of the other shows in this catalogue.

Who came back most

Magnum P.I. guest actors by episode count
Actor	Character	Eps
Christopher Thornton	Kenny "Shammy" Shamberg	27
Betsy Phillips	Suzy Madison	16
Kimee Balmilero	Dr. Noelani Cunha	16
Bobby Lee	Jin Jeong	14
Martin Martinez	Cade Jensen	12
Chantal Thuy	Det. Lia Kaleo	11
Jay Ali	Dr. Ethan Shah	8
Lance Lim	Dennis Katsumoto	8
Michael Rady	Detective Chris Childs	7
Taylor Wily	Kamekona	7
Emily Alabi	Mahina	6
James Remar	Captain Buck Greene	6
Michael deLara	M.E. Gabriel Santos	6
Domenick Lombardozzi	Sebastian Nuzo	5
Lee Anne Kuper	Officer Lee	5
Anthony J. Silva, Jr	Sgt. "Tatty" Ryce	4
Corbin Bernsen	Icepick	4
Dennis Chun	Sergeant Duke Lukela	4
Marsha Thomason	Eve	4
Saint Thompson	HPD Officer Smith	4
Shane Miyashiro	SWAT, Uni	4
Shawn Mokuahi Garnett	Flippa	4
Taiana Tully	Detective Laura Palea	4
Vince Shin	Kim Kil-Yon	4
Brooke Lyons	Abigail "Abby" Miller	3

Magnum P.I. guest stars by season

Guest actors per season of Magnum P.I.
Season	Guests	Who
Season 1	208	Kimee Balmilero, Christopher Thornton, Domenick Lombardozzi, David Bell, Jordana Brewster, Kala Alexander, Ken Jeong, Taylor Wily, Aaron Densley, Aaron Toney, Adam Burnett, Adrian Miranda and 196 more
Season 2	207	Christopher Thornton, Kimee Balmilero, Taylor Wily, Bobby Lee, Billy Malone, Brooke Lyons, Corbin Bernsen, James Remar, Kordell Kekoa, Larry Manetti, Shawn Mokuahi Garnett, William Forsythe and 195 more
Season 3	173	Jay Ali, Christopher Thornton, Kimee Balmilero, Betsy Phillips, Bobby Lee, Lance Lim, Allyson Blair, Judy Nguyen, Shawn Mokuahi Garnett, Zack Harris, Alex Carter, Alex Mauga and 161 more
Season 4	206	Chantal Thuy, Martin Martinez, Christopher Thornton, Betsy Phillips, Marsha Thomason, Bobby Lee, Yancey Arias, Devon Sawa, Josh Stamberg, Keolani Keola, Lee Anne Kuper, Michael deLara and 194 more
Season 5	234	Betsy Phillips, Michael Rady, Christopher Thornton, Emily Alabi, Bobby Lee, Lance Lim, Martin Martinez, Michael deLara, James Remar, Anthony J. Silva, Jr, Chelsea Gilligan, Cristopher David Cordio and 222 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.

Magnum P.I. guest stars who appear in other shows
Actor	In Magnum P.I.	Other shows
John Kapelos	Hector Aquino	40
Patrick Fabian	Sam Bedrosian	38
Scott Michael Campbell	Kyle Foley	37
Robert Pine	Danny Braddock	36
Alex Fernandez	Captain David Evers	34
François Chau	Kinny	32
Lawrence Pressman	Gus Urima	32
Brian McNamara	Raymond Lockhart	29
David Grant Wright	James Hutton	29
Sumalee Montano	Judge Marjorie Kamaka	28
Barbara Eve Harris	Lucy Akina	27
David Starzyk	Eddie	27
Jordan Belfi	Brent Urima	27
Judith Moreland	Mrs. Burke	27
Chase Kim	Jonny Kim	26

Played more than one character

Magnum P.I. actors credited under several characters
Actor	Characters	Eps
Walter Espiritu	Detective, Detective #2, HPD Uniform #2	3
Shane Miyashiro	SWAT, Uni	4
Allyson Blair	HNN Correspondent, HNN Meteorologist	2
Andrew J. West	Dr. Alan Healy, Sam Brody	2
Brennan Dyson	Guard, Merc #1	2
Chris Kim	HPD Uni #2, SWAT #1	2
Elizabeth Ignacio	Doctor, Dr. Darview	2
Joan Powers	Judge, Will's Mom	2
Joe Toro	Gunman #4, Tai	2
Kala Alexander	Chop Shop Boss, Kawika	2

Shares a cast with

Magnum P.I. and Hawaii Five-0 — 262 shared actors
Magnum P.I. and NCIS — 143 shared actors
Magnum P.I. and Criminal Minds — 109 shared actors
Magnum P.I. and NCIS: Los Angeles — 108 shared actors
Magnum P.I. and Grey's Anatomy — 103 shared actors
Magnum P.I. and S.W.A.T. — 92 shared actors
Magnum P.I. and The Rookie — 91 shared actors
Magnum P.I. and NCIS: Hawaiʻi — 83 shared actors

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