All 103 actors in both Grey's Anatomy and Magnum P.I.
103 actors have appeared in both Grey's Anatomy and Magnum P.I., across 563 episodes. The most-credited is Christopher Thornton, Daniel Campbell in Grey's Anatomy and Kenny "Shammy" Shamberg in Magnum P.I..
| Actor | In Grey's Anatomy | In Magnum P.I. | Eps | Eps |
|---|---|---|---|---|
| Christopher Thornton | Daniel Campbell | Kenny "Shammy" Shamberg | 1 | 27 |
| James Remar | James Evans | Captain Buck Greene | 6 | 6 |
| Jay Ali | Doug | Dr. Ethan Shah | 1 | 8 |
| Michael Rady | Mike Shelley | Detective Chris Childs | 1 | 7 |
| Robert Baker | Dr. Charles Percy | Randall | 14 | 1 |
| Dianne Doan | Molly Tran | Halia Kalani | 8 | 1 |
| Billy Malone | Jon McNeil | Sean Murphy | 5 | 2 |
| Josh Stamberg | Tommy Walker | Shane Whelan | 1 | 2 |
| Joy Osmanski | Intern Lucy | Ana Chua | 11 | 1 |
| Austin Basis | Devin | Robert Fraser | 1 | 1 |
| Caleb Foote | Private #1 | Dylan | 1 | 1 |
| Sharif Atkins | Josh Greene | Detective Richard Johnson | 1 | 1 |
| Sumalee Montano | Lena McCallister | Judge Marjorie Kamaka | 1 | 1 |
| Vera Cherny | Noelle Webb | Katya Kudjakova / Inna Khamatov | 1 | 1 |
| Dominic Hoffman | Dr. Jeff Russell | USCIS Oliver Tenney | 4 | 1 |
| Chase Kim | Lawyer | Jonny Kim | 1 | 2 |
| Johnny Rey Diaz | Noah Young | Rocky Ahn | 5 | 1 |
| Jordan Belfi | Nick | Brent Urima | 2 | 1 |
| Louis Ozawa Changchien | Steve Lee | Alan Sako | 2 | 1 |
| Robert Pine | Vincent | Danny Braddock | 1 | 2 |
| Tim Griffin | Ronny O'Malley | Sergeant Wayne Nix | 5 | 1 |
| Patrick Fabian | Dr. Oliver Lebackes | Sam Bedrosian | 2 | 2 |
| Tiffany Hines | Natalie | Lara Nuzo | 2 | 2 |
| Alex Fernandez | FBI Agent Heyward | Captain David Evers | 2 | 1 |
| Bill Smitrovich | Dr. Walter Carr | Sam Carlyle | 2 | 1 |
| Brent Sexton | Jerry Frost | James Harris | 1 | 1 |
| Brooke Nevin | Tricia Hale | Emily Pratt | 1 | 1 |
| Cullen Douglas | Dr. Bob Richardson, Mr. Arnold | Abe Davis | 2 | 1 |
| Dohn Norwood | Lou | Milo Rivers | 1 | 1 |
| Dylan Bruno | Griffith Lewis | John | 2 | 1 |
| Eddie Jemison | Stan Grossberg | Nolan Pierce | 2 | 1 |
| Eric Ladin | Victor Brown | Freddie | 1 | 1 |
| Jamie-Lynn Sigler | Dr. Laura Kaplan | Toni | 1 | 1 |
| Maya Stojan | Tatiana Flauto | Maya | 1 | 1 |
| Navi Rawat | Heidi | Isabelle Simpson | 1 | 1 |
| Sisa Grey | Deputy Hall | Principle Makani Mahelona | 1 | 1 |
| Valerie Cruz | Zona Cruz | Lani Levner | 1 | 1 |
| James DuMont | Sheldon Morris | Bob Hall | 2 | 1 |
| Leith Burke | Dr. McQueen | CIA Officer Grayson | 2 | 1 |
| Linda Park | Deborah Lee | Dr. Lim | 2 | 1 |
| Assaf Cohen | Aamir Elshami | Professor Roland Bar | 1 | 1 |
| Ben Vereen | Archie | Henry Barr | 1 | 1 |
| Bre Blair | Lauren Pailey | Lina | 1 | 1 |
| Brian Letscher | Mr. Epley | Bruce | 1 | 1 |
| Eve Brenner | Enid | Helen | 1 | 1 |
| Kheng Hua Tan | Vera Katano | Lynn Yang | 1 | 1 |
| Patrick Cavanaugh | Vince Cruse | David Carter | 1 | 1 |
| Paula Newsome | Mrs. Sturgeon | Brianna Healy | 1 | 1 |
| Rebeka Montoya | Marisela | Clara Bolton | 1 | 1 |
| Rich Ceraulo Ko | Brian | Charley Franks | 1 | 1 |
| Sachin Bhatt | Vivek Delgadillo | Cal Harper | 1 | 1 |
| Scott Michael Campbell | Mr. Hubble | Kyle Foley | 1 | 1 |
| Vedette Lim | Dr. Polly Preston | Sharon Lim | 1 | 1 |
| Veronica Diaz-Carranza | Mercedes Hernandez | Stella Torres | 1 | 1 |
| Alain Uy | Captain Pat Aquino | Milo | 1 | 1 |
| Alexandra Metz | Carmen Alvarez | Lanie | 1 | 1 |
| Alexie Gilmore | Sarah Freemont | Nora Simmons | 1 | 1 |
| Anthony Montgomery | Chris Ward | Roy Till | 1 | 1 |
| David Anders | Jim | Ray Nasano | 2 | 1 |
| Drew Rausch | John Finch | DJ | 1 | 1 |
| François Chau | Mr. Chue | Kinny | 1 | 1 |
| Jonathan Goldstein | Ken May | Roland McDowell | 1 | 1 |
| Joshua Bitton | Harry Adkins | Detective Jim Dugan | 1 | 1 |
| Karole Foreman | Olivia | Gladys | 1 | 1 |
| Lee Majors | Chuck Cain | Russell Harlan | 1 | 1 |
| Sarah Jane Morris | Emily Vaughn | Miranda Ivey | 1 | 1 |
| Susan Chuang | Naomi Evans | Helen Memminger | 1 | 1 |
| Brett Zimmerman | Sergeant Brian Carson | Oliver Cane | 1 | 1 |
| Catherine Dent | Cathy Rogerson | Georgia Preston | 1 | 1 |
| Charlie Bodin | Todd | Martin Hadley | 1 | 1 |
| David Shatraw | Lawyer #2 | John | 1 | 1 |
| Freda Foh Shen | Missy Grant | Kitty Layton | 1 | 1 |
| Heather Mazur | Erin Mason | Gina Pryor | 1 | 1 |
| Jon Curry | Fred Fisher | Frank Braggs | 1 | 1 |
| Judith Moreland | Mrs. Baer | Mrs. Burke | 1 | 1 |
| Leonard Wu | Eddie Huang | Pin Kim | 1 | 1 |
| Logan Donovan | Brad Parker | Mason Adams | 1 | 1 |
| Preston James Hillier | Cop | Jason Levner | 1 | 1 |
| Ramón de Ocampo | James Benton | Dr. Anthony | 1 | 1 |
| Stephen Oyoung | Greg Zheng | Lu Chan | 1 | 1 |
| Tyler Jacob Moore | Dane Pinetti | FBI Special Agent Jack Wheeler | 1 | 1 |
| Alexandre Chen | Newspaper Man | Dr. Wen Wong | 1 | 1 |
| Anisha Adusumilli | Couples Therapist | Olivia Tremell | 1 | 1 |
| David Grant Wright | Mr. Burton | James Hutton | 1 | 1 |
| Jennifer Say Gan | Dr. Keating | Leilani Kama | 1 | 1 |
| Kelvin Han Yee | Dr. James Lew | Dan Liu | 1 | 1 |
| Jim Lau | Examiner #4 | Moku | 2 | 1 |
| Bob Rumnock | ND Doctor | Vinnie Black | 1 | 1 |
| Hahn Cho | Dr. Dale Wong | Russell Chang | 1 | 1 |
| Kelly Sry | Tech | Red | 1 | 1 |
| Lawrence Pressman | Frank Nelson | Gus Urima | 1 | 1 |
| Scott Michael Morgan | Patient #2 | Todd Reeves | 1 | 1 |
| Wilmer Calderon | Raul Aranda | Oscar Leota | 1 | 1 |
| Matthew Jaeger | Kyle Kasliner | Patrick McGowan | 1 | 1 |
| Suzanne Ford | Hazel Parker | Betty | 1 | 1 |
| Amy Tsang | Tara | Loi Chau | 1 | 1 |
| Napoleon Tavale | Crew Chief | Harold | 1 | 1 |
| Tom Choi | Flouroscope Tech | Ted Rogers | 1 | 1 |
| Cameron Edward Gayden | Frank | Young Magnum | 1 | 1 |
| Grinnell Morris | Intern #4 | Larry | 1 | 1 |
| Ida Anderson | Lady | Nurse | 1 | 1 |
| Jeff Marlow | Drunk Man | Reginald Lee | 1 | 1 |
| Eddie Yu | Luke | Charles Fok | 1 | 1 |
← Grey's Anatomy × Magnum P.I.
Cast data from TVmaze, licensed CC BY-SA 4.0.