Actors in both Star Trek: The Next Generation and Star Trek: Voyager
85 actors have appeared in both Star Trek: The Next Generation and Star Trek: Voyager, across 350 episodes. The most-credited is Majel Barrett Roddenberry, Computer, Lwaxana Troi, Narrator in Star Trek: The Next Generation and Computer Voice, Narrator, Announcer in Star Trek: Voyager.
| Actor | In Star Trek: The Next Generation | In Star Trek: Voyager | Eps | Eps |
|---|---|---|---|---|
| Majel Barrett Roddenberry | Computer, Lwaxana Troi, Narrator | Computer Voice, Narrator, Announcer | 105 | 103 |
| Martha Hackett | Alien Captain | Seska | 1 | 13 |
| John de Lancie | Q | Q | 10 | 3 |
| Dwight Schultz | Lt. Reginald "Reg" Barclay III | Lt. Reginald "Reg" Barclay | 5 | 7 |
| Alexander Enberg | Reporter, Taurik | Ensign Vorik, Malon 3 | 2 | 9 |
| Josh Clark | Conn Officer | Lt. Joseph "Joe" Carey | 1 | 7 |
| Susanna Thompson | Inmate, Varel | Borg Queen | 2 | 4 |
| Vaughn Armstrong | Captain Korris | Alpha Hirogen, Korath, Telek R'Mor | 1 | 5 |
| Armin Shimerman | Betazoid Gift Box, DaiMon Bractor, Letek | Quark | 4 | 1 |
| Tony Todd | Kurn | Alpha Hirogen | 3 | 1 |
| Albie Selznick | Juggler | Tak Tak, Tash | 1 | 2 |
| Brian Markinson | Vorin | Lt. Peter Durst | 1 | 2 |
| Carel Struycken | Mr. Homn | Spectre | 5 | 1 |
| Frank Corsentino | DaiMon Bok, DaiMon Tog | Gegis | 2 | 1 |
| Glenn Morshower | Ensign Burke, Orton | Guard #1 | 2 | 1 |
| Jonathan Del Arco | Hugh | Fantome | 2 | 1 |
| Lee Arenberg | DaiMon Bok, DaiMon Prak | Pelk | 2 | 1 |
| Ray Walston | Boothby | Boothby | 1 | 2 |
| Richard Herd | L'Kor | Admiral Paris | 2 | 4 |
| Spencer Garrett | Simon Tarses | Weiss | 1 | 2 |
Cast data from TVmaze, licensed CC BY-SA 4.0.