Actors in both Hawaii Five-O and Star Trek
54 actors have appeared in both Hawaii Five-O and Star Trek, across 363 episodes. The most-credited is George Takei, Nathaniel Blake in Hawaii Five-O and Lt. Hikaru Sulu, Mirror Sulu in Star Trek.
| Actor | In Hawaii Five-O | In Star Trek | Eps | Eps |
|---|---|---|---|---|
| George Takei | Nathaniel Blake | Lt. Hikaru Sulu, Mirror Sulu | 1 | 47 |
| Mark Lenard | Commander Hawkins, Dan Bok, Rogloff | Ambassador Sarek, Romulan Commander | 4 | 2 |
| Roger C. Carmel | Misha the Bear | Harcourt Fenton "Harry" Mudd | 3 | 2 |
| Joanne Linville | Dr. C.L. Fremont, Camilla Carver | Romulan Commander | 3 | 1 |
| Michael Strong | Fred Grayson, Harry Maguire, Meredith Howell | Dr. Roger Korby | 3 | 1 |
| James Gregory | Jonathan Kaye, Mike Finney | Dr. Tristan Adams | 2 | 1 |
| Stewart Moss | Ned Horvath | Hanar, Joe Tormolen | 1 | 2 |
| Barry Russo | Abilleno, Albert Jovanko, Eddie Rizzo | Lt. Cmdr. Giotto, Wesley | 4 | 2 |
| John Colicos | Lorenzo Corman, Mr. Thorncrest | Kor | 2 | 1 |
| Madlyn Rhue | June Fleming, Madge | Marla | 2 | 1 |
| Marj Dusay | Andrea Claire Dupre, Nicole Wylie | Kara | 2 | 1 |
| Vic Tayback | Martin Lynch, Parmel | Jojo Krako | 2 | 1 |
| William Windom | Harlan Henderson, Ossie Connors | Commodore Matthew Decker | 2 | 1 |
| Barbara Luna | Elena Kamoku, Yoko | Lt. Marlena Moreau, Mirror Marlena | 3 | 1 |
| Barry Atwater | Lester Workman, Michael Holt | Surak | 3 | 1 |
| Diana Muldaur | Angela Storey, Cathy Wallis | Dr. Anne Mulhall, Dr. Miranda Jones | 2 | 2 |
| France Nuyen | Frances Chai, Iso, Sirone | Elaan | 3 | 1 |
| Jason Evers | Charles Irwin, Lieutenant Dexter, Wallis | Rael | 3 | 1 |
| Sabrina Scharf | Nicole Fleming, Victoria Lochner | Miramanee | 3 | 1 |
| Alfred Ryder | Harry Quon | Prof. Robert Crater | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.