All 91 actors in both NCIS and Star Trek: Deep Space Nine
91 actors have appeared in both NCIS and Star Trek: Deep Space Nine, across 684 episodes. The most-credited is Penny Johnson Jerald, Joanne Torrence in NCIS and Kasidy Yates, Cassie in Star Trek: Deep Space Nine.
| Actor | In NCIS | In Star Trek: Deep Space Nine | Eps | Eps |
|---|---|---|---|---|
| Penny Johnson Jerald | Joanne Torrence | Kasidy Yates, Cassie | 2 | 16 |
| Susanna Thompson | Army Lt. Col. Hollis Mann | Dr. Lenara Kahn | 8 | 1 |
| Leslie Hope | SecNav Sarah Porter | Kira Meru | 6 | 1 |
| Gregory Itzin | FBI Director, Spencer Downing | Hain, Ilon Tandro | 3 | 2 |
| Megan Gallagher | Under Secretary of the Navy Jennifer Leo | Faith Garland, Mareel | 3 | 2 |
| René Auberjonois | Dr. Felix Blackwell | Curzon Dax, Douglas Pabst, Mirror Odo | 1 | 3 |
| Salli Richardson-Whitfield | Carrie Clark | Fenna / Nidell | 3 | 1 |
| Tim Russ | Dr. Erik Harper, Jerry Kemper | Mirror Tuvok, T'Kar | 2 | 2 |
| Bertila Damas | Navy Master Chief Petty Officer Renee Quichera | Sakonna | 1 | 2 |
| K Callan | Bertha Jones-Delacroix, Grace Mullen | Alsia | 2 | 1 |
| Todd Waring | Albert James "Jamie" Beck | DeCurtis, Glinn Lasaran | 1 | 2 |
| Lawrence Pressman | Dr. Russell Pike, Secret Service Director | Tekeny Ghemor, Ambassador Krajensky | 2 | 3 |
| Don Stark | Marty Fiero | Ashrock | 1 | 1 |
| Erick Avari | Col. Dan McClafferty | Vedek Yarka | 1 | 1 |
| Michael B. Silver | Nicholas Sandlock | Vinod | 1 | 1 |
| Robert Picardo | Retired Marine Gunnery Sergeant Dale Harding | Dr. Lewis Zimmerman, EMH Mark I | 1 | 1 |
| Andrew Hawkes | Dean Campbell | Amat'igan | 2 | 1 |
| Brett Cullen | Navy Capt. Todd Gelfand | Deral | 2 | 1 |
| Brian Thompson | Master Chief Vince Nutter | Inglatu, Toman'torax | 1 | 2 |
| J. Paul Boehmer | Army CID Director Wayne Rogers | Vornar | 2 | 1 |
| Tina Lifford | Dr. Fox | Lee | 1 | 2 |
| Al Rodrigo | Police Captain Martinez | Bernardo Calvera | 1 | 2 |
| Daphne Ashbrook | Donna Peyton | Ensign Melora Pazlar | 1 | 1 |
| Deborah Strang | Diane Warner | Admiral T'Lara | 1 | 1 |
| Jeff Austin | Colonel Mike Granger | Bolian Security Officer | 1 | 1 |
| Jennifer Hetrick | Dr. Donna Dunlap | Vash | 1 | 1 |
| Joel Brooks | Ronnie Mustard | Falow | 1 | 1 |
| John Cothran, Jr. | Alfred Holbrook | Telok | 1 | 1 |
| John Doman | Police Lt. Cheney | Lenaris Holem | 1 | 1 |
| John Eric Bentley | Captain Arthur Caldwell | Klingon | 1 | 1 |
| Kathleen Garrett | Judge Mary Branigan | Vulcan Captain | 1 | 1 |
| Larry Cedar | Jason Kaplan | Dr. Nydrom | 1 | 1 |
| Lisa Banes | Ambassador Olivia Edmunds | Dr. Renhol | 1 | 1 |
| Martha Hackett | Celia Roberts | Sub-Commander T'Rul | 1 | 2 |
| Michael Reilly Burke | Frank Connell | Hogue | 1 | 1 |
| Molly Hagan | Audrey Vetter | Eris | 1 | 1 |
| Rick Pasqualone | Corporal Paul Dafelmair | Toral | 1 | 1 |
| Scott MacDonald | Militia Leader | Goran'Agar, Tosk | 1 | 2 |
| Shannon Cochran | Mallory Linn | Kalita, Sirella | 1 | 2 |
| Steve Rankin | Sgt. Bill Atlas | Cardassian Officer, Yeto | 1 | 3 |
| Tim De Zarn | David Runion | Halb Daier | 1 | 1 |
| Tracy Middendorf | Tara Bick | Tora Ziyal | 1 | 1 |
| Tracy Scoggins | Tabitha Summers | Gilora Rejal | 1 | 1 |
| James MacDonald | Capt. Faul, Navy Admiral Norton Padgett | Captain Wainwright | 2 | 1 |
| Natalija Nogulich | Judge Maddox | Admiral Alynna Nechayev | 1 | 2 |
| Phil Morris | Navy Capt. Paul Martino | Remata'Klan, Thopok | 1 | 2 |
| Randy Oglesby | Army Brigadier General Scott Oliver | Ah-Kel, Ro-Kel, Silaran Prin | 1 | 2 |
| Andy Milder | Gene Isaacson | Crewman Boq'ta | 1 | 1 |
| Blake Lindsley | Belinda Carter | Synon | 1 | 1 |
| Conor O'Farrell | William Danforth | Jeff Carlson | 1 | 1 |
| D. Elliot Woods | Detective Bradley | Klingon Officer | 1 | 1 |
| Daniel Zacapa | Detective Martin Alonzo | Henry Garcia | 1 | 1 |
| Geoffrey Blake | Marc Attencio | Arjin | 1 | 1 |
| Jack Kehler | Tom Wilson | Captain Jaheel | 1 | 1 |
| Keone Young | Lee Sung | Buck Bokai | 1 | 1 |
| Michelle Krusiec | Maya | Adult Molly O'Brien | 1 | 1 |
| Mike Starr | Monroe Cooper | Tony Cicci | 1 | 1 |
| Rick Worthy | Navy Captain Logan Doyle | Kornan | 1 | 1 |
| Robert Curtis Brown | Gary Tolin | Vedek Sorad | 1 | 1 |
| Tim Ryan | Greg Boyen | Dr. Bejal Otner | 1 | 1 |
| Van Epperson | Pop | Bajoran Clerk | 1 | 1 |
| John Vickery | Interpol Inspector Hugh Benson | Gul Rusot | 1 | 3 |
| Benjamin Brown | Marine Capt. Arvidas | Kagan | 1 | 1 |
| Brad Greenquist | Dr. Damon Shore | Krit | 1 | 1 |
| Brian Markinson | Marine EOD Sgt. Dan Trask | Dr. Elias Giger | 1 | 1 |
| Bruce Gray | CIA Director Roper | Admiral Chekote | 1 | 1 |
| Caroline Lagerfelt | Mrs. Victoria Mallard | Chief Archon Makbar | 1 | 1 |
| Christopher Darga | Skip Harris | Commander Kaybok | 1 | 1 |
| David Carpenter | Henry Hoss | Onara | 1 | 1 |
| Lawrence Monoson | Adam O'Neill | Hovath | 1 | 1 |
| Loren Lester | Dr. Edgar Cromwell | Attendant | 1 | 1 |
| Mark Holton | Sergeant Linn | Bolian Orderly | 1 | 1 |
| Michael Canavan | Retired Navy Admiral Thomas Garscott | Tamal | 1 | 1 |
| Michael Edward Rose | Marine Major Gordon Holcomb, Walter Richter | Niles | 2 | 2 |
| Michael Ensign | Doctor Ishmael Havana | Lojal | 1 | 1 |
| Nancy Youngblut | Joanna "Mama Jo" Dalton | Kolana | 1 | 1 |
| Richard Lineback | Chuck Winslow | Selin Peers | 1 | 1 |
| Tom McCleister | Mr. Green | Kolos | 1 | 1 |
| Bennet Guillory | Henry | Medical Big Shot | 1 | 1 |
| Brian George | Dr. Ameen Temani | Richard Bashir | 1 | 1 |
| Carlos Lacamara | Joe Tabaraz | Retaya | 1 | 1 |
| Chris Nelson Norris | Retired Marine Captain Chester Kelb | Trajok | 1 | 1 |
| Darin Cooper | Roy Evans | Cardassian Officer | 1 | 1 |
| Leon Russom | Grandpa | Admiral Toddman | 1 | 1 |
| Sandra Nelson | Jessica Terdei | Tavana | 1 | 1 |
| James Black | Gate guard | Klingon Alliance Helmsman | 1 | 1 |
| John Prosky | Carl Dalton | Brathaw | 1 | 1 |
| Andrea C. Robinson | Midge Watkins | Blonde | 1 | 1 |
| Annie O'Donnell | Agnes Anderstout | Keena | 1 | 1 |
| Bart McCarthy | Retired Marine Master Sergeant George Hawkins | Admiral Coburn | 1 | 1 |
| Harry Hutchinson | Alexandria Cop | Trooper | 1 | 1 |
← NCIS × Star Trek: Deep Space Nine
Cast data from TVmaze, licensed CC BY-SA 4.0.