Actors in both ER and Star Trek: Deep Space Nine
171 actors have appeared in both ER and Star Trek: Deep Space Nine, across 507 episodes. The most-credited is Leland Orser, Dr. Lucien Dubenko in ER and Gai, Lovok in Star Trek: Deep Space Nine.
| Actor | In ER | In Star Trek: Deep Space Nine | Eps | Eps |
|---|---|---|---|---|
| Leland Orser | Dr. Lucien Dubenko | Gai, Lovok | 61 | 2 |
| Max Grodénchik | Street Vendor | Rom, Grand Nagus Gint, Mirror Rom | 1 | 36 |
| Lily Mariye | Nurse Lily Jarvik | Ops Officer | 127 | 2 |
| Penny Johnson Jerald | Nurse Practitioner Lynette Evans | Kasidy Yates, Cassie | 9 | 16 |
| Rosalind Chao | Dr. Theresa Chow | Keiko O'Brien | 1 | 19 |
| Louise Fletcher | Roberta "Birdie" Chadwick | Kai Winn Adami | 3 | 15 |
| Michael B. Silver | Dr. Paul Myers | Vinod | 12 | 1 |
| Casey Biggs | Mike | Damar, Dr. Wykoff | 1 | 24 |
| Chase Masterson | Mrs. Phillips | Leeta, Emony Dax, Mirror Leeta | 1 | 17 |
| Wallace Shawn | Teddy Lempell | Grand Nagus Zek | 1 | 7 |
| Cress Williams | Officer Reggie Moore | Talak'talan | 14 | 1 |
| Camille Saviola | Margaret | Kai Opaka | 1 | 5 |
| Ann Gillespie | Mrs. Ellis | Nurse Jabara | 1 | 4 |
| James Cromwell | Bishop Stewart | Hanok | 4 | 1 |
| Chris Sarandon | Dr. Burke | Martus Mazur | 3 | 1 |
| F.J. Rio | Miguel Rivas | Enrique Muñiz | 1 | 3 |
| Megan Gallagher | Kathy Snyder | Faith Garland, Mareel | 2 | 2 |
| Paul Dooley | Henry Lewis | Enabran Tain | 4 | 4 |
| Gregory Itzin | Burn Doctor | Hain, Ilon Tandro | 1 | 2 |
| Jack Shearer | Hal Grunwald | Ruwon, Vadosia | 1 | 2 |
Cast data from TVmaze, licensed CC BY-SA 4.0.