All 85 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 |
| Susan Diol | Carmen Davila | Dr. Denara Pel | 1 | 2 |
| Thomas Kopache | Engineer, Mirok | Viorsa | 2 | 1 |
| Carolyn Seymour | Cmdr. Toreth, Mirasta Yale, Sub Cmdr. Taris | Mrs. Templeton | 3 | 2 |
| Alan Altshuld | Pomet, Yranac | Lumas, Sandalmaker | 2 | 2 |
| Eric Pierpoint | Voval | Kotar | 1 | 1 |
| Gwynyth Walsh | B'Etor | Chief Examiner Nimira | 3 | 1 |
| Harry Groener | Tam Elbrun | The Magistrate | 1 | 1 |
| Jerry Hardin | Samuel Clemens, Radue | Dr. Neria | 3 | 1 |
| Jonathan Frakes | Lieutenant Thomas Riker | Commander William T. Riker | 1 | 1 |
| Judson Scott | Sobi | Commander Rekar | 1 | 1 |
| McKenzie Westmore | Rose | Ensign Jenkins | 1 | 1 |
| Michael Keenan | Maturin | Hrothgar | 1 | 1 |
| Mickey Cottrell | Alrik | Dumah | 1 | 1 |
| Ray Reinhardt | Admiral Aaron | Tolen Ren | 1 | 1 |
| Robert Knepper | Wyatt Miller | Gaul | 1 | 1 |
| Rod Arrants | Rex | Daleth | 1 | 1 |
| Ron Canada | Martin Benbeck | Fesek | 1 | 1 |
| Suzie Plakson | K'Ehleyr, Lt. Selar | The Female Q | 3 | 1 |
| William Morgan Sheppard | Dr. Ira Graves | Qatai | 1 | 1 |
| Wren T. Brown | Transporter Pilot | Kohlar | 1 | 1 |
| Peter Marx | Birta, Dr. Reyga, Nibor | Krenim Commandant | 3 | 2 |
| Henry Darrow | Admiral Savar | Kolopak | 1 | 2 |
| Henry Woronicz | Lt. J'Dan | Forra Gegen, Quarren | 1 | 2 |
| James Sloyan | Alidar Jarok, K'Mtar | Ma'bor Jetrel | 2 | 1 |
| Jennifer Gatti | Ba'el | Libby | 2 | 1 |
| Richard Riehle | Batai | Seamus | 1 | 2 |
| Tim Kelleher | Lieutenant Gaines | Four of Nine | 2 | 1 |
| John Durbin | Gul Lemec, Ssestar | Alien Miner | 3 | 1 |
| Norman Large | Proconsul Neral, Maques | Ocampan Man | 3 | 1 |
| Alan Scarfe | Admiral Mendak, Tokath | Augris | 2 | 1 |
| Charles Esten | Divok | Dathan | 1 | 1 |
| Clint Carmichael | Nausicaan #1 | Hirogen Hunter | 1 | 1 |
| James Horan | Barnaby, Dr. Jo'Bril | Tosin | 2 | 1 |
| Jeff Allin | Ensign Daniel Sutter | Gedrin | 1 | 1 |
| John Fleck | Taibak | Abaddon | 1 | 1 |
| John Kenton Shull | Molor | Brok'Tan, Hanonian Medicine Man, Nocona | 1 | 3 |
| Mark L. Taylor | Haritath | Jarlath | 1 | 1 |
| Mirron E. Willis | Vorn | Rettik | 1 | 2 |
| Ned Romero | Anthwarta | Great Grandfather | 1 | 1 |
| Ray Wise | Liko | Arturis | 1 | 1 |
| Richard McGonagle | Dr. J'Dar | Commander Pete Harkins | 1 | 2 |
| Richard Poe | Gul Evek | Gul Evek | 2 | 1 |
| Sherman Howard | Captain Endar | T'Greth | 1 | 1 |
| Tim De Zarn | Satler | Haliz, Yediq | 1 | 2 |
| Warren Munson | Admiral Holt | Admiral Paris | 1 | 2 |
| David Selburg | Dr. Syrus, Whalen | Toscat | 2 | 1 |
| Scott MacDonald | N'Vek | Rollins | 1 | 2 |
| Alan Oppenheimer | Koroth | Nezu Ambassador | 1 | 1 |
| Charles Lucia | Ambassador Vel Alkar | Mabus | 1 | 1 |
| Dennis Cockrum | Alien Captain | Orek | 1 | 1 |
| Jeff McCarthy | Roga Danar | Human Doctor | 1 | 1 |
| Randy Oglesby | Scholar | Kir | 1 | 1 |
| Richard Fancy | Captain Satelk | Alien | 1 | 1 |
| Rick Fitts | Dr. Martin | Zahl | 1 | 1 |
| Robert Ito | Tac. Officer Chang | John Kim | 1 | 1 |
| Scott Jaeck | Administrator | Cavit | 1 | 1 |
| Craig Richard Nelson | Krag | Vaskan Arbiter | 1 | 1 |
| Dan Kern | Lt. Dean | Kellan | 1 | 1 |
| Eve Brenner | Inad | Jora Mirell | 1 | 1 |
| Michael Ensign | Krola | Bard | 1 | 1 |
| Peter Vogt | Romulan Commander | Commandant | 1 | 1 |
| Bruce French | Sabin Genestra | Ocampa Doctor | 1 | 1 |
| Dan Shor | Dr. Arridor | Dr. Arridor | 1 | 1 |
| James Greene | Dr. Barron | Passerby | 1 | 1 |
| Cindy Sorenson | Animal Anya | Lizard No. 2 | 1 | 1 |
← Star Trek: The Next Generation × Star Trek: Voyager
Cast data from TVmaze, licensed CC BY-SA 4.0.