Actors in both ER and Star Trek: Enterprise
126 actors have appeared in both ER and Star Trek: Enterprise, across 429 episodes. The most-credited is Leland Orser, Dr. Lucien Dubenko in ER and Loomis (21st century) in Star Trek: Enterprise.
| Actor | In ER | In Star Trek: Enterprise | Eps | Eps |
|---|---|---|---|---|
| Leland Orser | Dr. Lucien Dubenko | Loomis (21st century) | 61 | 1 |
| Michelle C. Bonilla | Paramedic Christine Harms | Bu'kaH | 58 | 1 |
| Vaughn Armstrong | Greg Mitchell | Admiral Maxwell Forrest, Kreetassan Captain, Captain Maximilian Forrest (Mirror Universe) | 1 | 18 |
| Randy Oglesby | PICU Doctor | Degra, Trena'L | 1 | 11 |
| Steven Culp | Dave Spencer, Dr. Charles Cameron | Major J. Hayes | 5 | 5 |
| Paula Malcomson | Meg Riley | Madeline Reed | 8 | 1 |
| Clancy Brown | Dr. Ellis West | Zobral | 7 | 1 |
| Daniel Dae Kim | Ken Sung | Corporal D. Chang | 4 | 3 |
| Eric Pierpoint | Mr. Dwyer | Harris (Section 31), Shiraht | 1 | 5 |
| Maury Sterling | Dr. Nelson | Tarquin | 5 | 1 |
| Sean McGowan | Food Court Guy | Corporal F. Hawkins | 1 | 4 |
| Scott MacDonald | Ambulance Driver, Detective | Commander Dolim | 2 | 8 |
| Jim Fitzpatrick | Lt. Col. McGreun | Commander Williams | 1 | 4 |
| Lawrence Monoson | Dean Rollins | First Officer Matthew Ryan | 4 | 1 |
| Bill Cobbs | Mr. Bowman | Emory Erickson | 1 | 1 |
| Brad Greenquist | Mr. Butler | Captain Khata'n Zshaar, Rigelian Kidnapper #1 | 2 | 2 |
| Conor O'Farrell | Richard Abbott | Burzaan, D'Jamat | 2 | 2 |
| Corey Mendell Parker | Byron Evers | Paul Mayweather | 1 | 1 |
| Dennis Cockrum | Little League Player's Father | Alien Barkeep | 1 | 1 |
| Efrain Figueroa | Julio Echevarria | Translator Voice (Universal translator) | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.