All 102 actors in both Star Trek: Deep Space Nine and Star Trek: The Next Generation
102 actors have appeared in both Star Trek: Deep Space Nine and Star Trek: The Next Generation, across 354 episodes. The most-credited is Majel Barrett Roddenberry, Federation Computer, Lwaxana Troi, Narrator in Star Trek: Deep Space Nine and Computer, Lwaxana Troi, Narrator in Star Trek: The Next Generation.
| Actor | In Star Trek: Deep Space Nine | In Star Trek: The Next Generation | Eps | Eps |
|---|---|---|---|---|
| Majel Barrett Roddenberry | Federation Computer, Lwaxana Troi, Narrator | Computer, Lwaxana Troi, Narrator | 29 | 105 |
| Colm Meaney | Mirror Miles "Smiley" O'Brien, Albert Macklin, Falcon | Miles O'Brien | 7 | 53 |
| Marc Alaimo | Gul Dukat, Officer Burt Ryan | Badar N'D'D, Cmdr. Tebok, Frederick La Rouque | 37 | 4 |
| Max Grodénchik | Rom, Grand Nagus Gint, Mirror Rom | Par Lenor, Sovak | 36 | 2 |
| Rosalind Chao | Keiko O'Brien | Keiko O'Brien | 19 | 8 |
| Penny Johnson Jerald | Kasidy Yates, Cassie | Dobara | 16 | 1 |
| Salome Jens | Female Changeling | Humanoid Progenitor | 16 | 1 |
| Robert O'Reilly | Gowron, Countman | Gowron, Scarface | 8 | 5 |
| John de Lancie | Q | Q | 1 | 10 |
| Armin Shimerman | Audrid Dax, Herbert Rossoff, Mirror Quark | Betazoid Gift Box, DaiMon Bractor, Letek | 3 | 4 |
| Hana Hatae | Molly O'Brien | Molly O'Brien | 11 | 1 |
| Natalija Nogulich | Admiral Alynna Nechayev | Admiral Alynna Nechayev | 2 | 4 |
| Ann Gillespie | Nurse Jabara | Ensign Hildebrant | 4 | 1 |
| Richard Poe | Gul Evek | Gul Evek | 3 | 2 |
| Tony Todd | Adult Jake Sisko, Kurn | Kurn | 2 | 3 |
| Duncan Regehr | Shakaar Edon | Ronin | 3 | 1 |
| James Cromwell | Hanok | Jaglom Shrek, Nayrok | 1 | 3 |
| James Sloyan | Dr. Mora Pol | Alidar Jarok, K'Mtar | 2 | 2 |
| Thomas Kopache | Kira Taban | Engineer, Mirok | 2 | 2 |
| Vaughn Armstrong | Seskal, Gul Danar | Captain Korris | 3 | 1 |
| April Grace | Transporter Chief Maggie Hubbell | Transporter Chief Maggie Hubbell | 1 | 5 |
| James Lashly | Lieutenant George Primmin | Ensign Kopf | 2 | 1 |
| Jennifer Hetrick | Vash | Vash | 1 | 2 |
| Lee Arenberg | Gral | DaiMon Bok, DaiMon Prak | 1 | 2 |
| Michael Keenan | Patrick | Maturin | 2 | 1 |
| Patricia Tallman | Nima, Nurse Tagana, Weapons Officer | Female Alien, Kiro, Security Officer | 3 | 3 |
| Patrick Stewart | Captain Jean-Luc Picard | Michael Williams | 2 | 1 |
| Susanna Thompson | Dr. Lenara Kahn | Inmate, Varel | 1 | 2 |
| Tim Russ | Mirror Tuvok, T'Kar | Devor | 2 | 1 |
| Dennis Madalone | Marauder, Atul | Ramos, Transporter Technician Hendrick | 5 | 2 |
| Anne Haney | Els Renora | Rishon Uxbridge | 1 | 1 |
| Dey Young | Arissa | Hannah Bates | 1 | 1 |
| Eric Pierpoint | Captain Sanders | Voval | 1 | 1 |
| Erick Avari | Vedek Yarka | B'iJik | 1 | 1 |
| Fionnula Flanagan | Enina Tandro | Juliana Tainer | 1 | 1 |
| Gwynyth Walsh | B'Etor | B'Etor | 1 | 3 |
| Jonathan Frakes | Lieutenant Thomas "Tom" Riker | Lieutenant Thomas Riker | 1 | 1 |
| Julian D. Christopher | Cardassian | Hagon | 1 | 1 |
| Michael Bell | Borum, Drofo Awa | Groppler Zorn | 2 | 2 |
| Michael Bofshever | Toran | Male Alien | 1 | 1 |
| Ron Canada | Ch'Pok | Martin Benbeck | 1 | 1 |
| Brian Thompson | Inglatu, Toman'torax | Lt. Klag | 2 | 1 |
| Julie Caitlin Brown | Ty Kajada | Vekor, Velor | 1 | 2 |
| Megan Cole | Kimara Cretak | Noor | 2 | 1 |
| Alexander Siddig | Mirror Julian Bashir, Julius Eaton, LMH | Dr. Julian Bashir | 6 | 1 |
| Barbara March | Lursa | Lursa | 1 | 3 |
| Chris Latta | Assistant, Durg | Captain Grebnedlog, Captain Kargan | 2 | 2 |
| James Horan | Ikat'ika | Barnaby, Dr. Jo'Bril | 2 | 2 |
| John Durbin | Traidy | Gul Lemec, Ssestar | 1 | 3 |
| John Fleck | Cardassian Overseer, Koval, Ornithar | Taibak | 3 | 1 |
| Susan Gibney | Erika Benteen | Dr. Leah Brahms | 2 | 2 |
| Andrew Prine | Legate Turrel | Administrator | 1 | 1 |
| Dick Miller | Vin | Vendor | 2 | 1 |
| Erick Weiss | Stephan | Crewman, Ensign Kane | 1 | 2 |
| James Greene | Ranjen Koral | Dr. Barron | 1 | 1 |
| John Cothran, Jr. | Telok | Captain Nu'Daq | 1 | 1 |
| Lawrence Tierney | Regent of Palamar | Cyrus Redblock | 1 | 1 |
| Martha Hackett | Sub-Commander T'Rul | Alien Captain | 2 | 1 |
| Michael Reilly Burke | Hogue | Goval | 1 | 1 |
| Nick Tate | Liam Bilby | Dirgo | 1 | 1 |
| Norman Large | Captain Viterian | Proconsul Neral, Maques | 1 | 3 |
| Richard Lineback | Selin Peers | Romas | 1 | 1 |
| Scott MacDonald | Goran'Agar, Tosk | N'Vek | 2 | 1 |
| Steve Rankin | Cardassian Officer, Yeto | Centurion Patahk | 3 | 1 |
| Tricia O'Neil | Korinas | Captain Rachel Garrett, Dr. Kurak | 1 | 2 |
| Wayne Grace | Legate | Torak | 1 | 1 |
| John Kenton Shull | K'Temang, Security Officer | Molor | 2 | 1 |
| Randy Oglesby | Ah-Kel, Ro-Kel, Silaran Prin | Scholar | 2 | 1 |
| Scott Trost | Bajoran Officer | Lt. Shipley, Transporter Ensign | 1 | 2 |
| Brian Markinson | Dr. Elias Giger | Vorin | 1 | 1 |
| Christopher Michael | Helm Officer | Coalition Lieutenant | 1 | 1 |
| Julia Nickson | Cassandra | Ensign Lian T'Su | 1 | 1 |
| Katherine Moffat | Vaatrik Pallra | Etana Jol | 1 | 1 |
| Noley Thornton | Taya | Clara Sutter | 1 | 1 |
| Roy Brocksmith | Razka Karn | Sirna Kolrami | 1 | 1 |
| Sherman Howard | Syvar | Captain Endar | 1 | 1 |
| Van Epperson | Bajoran Clerk | Morgue Attendant | 1 | 1 |
| Shannon Cochran | Kalita, Sirella | Kalita | 2 | 1 |
| John Vickery | Gul Rusot | Andrus Hagan | 3 | 1 |
| Alan Oppenheimer | Captain Keogh | Koroth | 1 | 1 |
| Bruce Gray | Admiral Chekote | Admiral Chekote | 1 | 1 |
| Edward Wiley | Gul Toran | Governor Vagh | 1 | 1 |
| Jill Jacobson | Chalan Aroya | Vanessa | 1 | 1 |
| Juliana Donald | Emi | Tayna | 1 | 1 |
| Margot Rose | K'Par Rinn | Eline | 1 | 1 |
| Michael Ensign | Lojal | Krola | 1 | 1 |
| Nicholas Cascone | Timor | Davies | 1 | 1 |
| Peter Vogt | Bajoran #1 | Romulan Commander | 1 | 1 |
| Stephen James Carver | Ibudan | Helmsman, Tayar | 1 | 2 |
| Daniel Riordan | First Guard | Rondon | 1 | 1 |
| Deirdre Imershein | Lieutenant Watley | Joval | 1 | 1 |
| Joel Swetow | Gul Jasad | Yog the Yridian | 1 | 1 |
| Jordan Lund | Woban | Kulge | 1 | 1 |
| Kay E. Kuter | The Sirah | Cytherian | 1 | 1 |
| Lou Wagner | Krax | Solok | 1 | 1 |
| Marc Lawrence | Carl Zeemo | Volnoth | 1 | 1 |
| Rudolph Willrich | Academy Commandant | Reittan Grax | 1 | 1 |
| Tim De Zarn | Halb Daier | Satler | 1 | 1 |
| Vidal Peterson | Rugal | D'Tan | 1 | 1 |
| Mike Genovese | Captain Zef'No | Desk Sergeant | 1 | 1 |
| Christopher Halsted | Jem'Hadar First | First Learner | 1 | 1 |
| Karen Hensel | Deela | Admiral Brackett | 1 | 1 |
← Star Trek: Deep Space Nine × Star Trek: The Next Generation
Cast data from TVmaze, licensed CC BY-SA 4.0.