All 108 actors in both CSI: Crime Scene Investigation and Star Trek: Enterprise
108 actors have appeared in both CSI: Crime Scene Investigation and Star Trek: Enterprise, across 435 episodes. The most-credited is Vaughn Armstrong, Dr. Dennis Keil in CSI: Crime Scene Investigation and Admiral Maxwell Forrest, Kreetassan Captain, Captain Maximilian Forrest (Mirror Universe) in Star Trek: Enterprise.
| Actor | In CSI: Crime Scene Investigation | In Star Trek: Enterprise | Eps | Eps |
|---|---|---|---|---|
| Vaughn Armstrong | Dr. Dennis Keil | Admiral Maxwell Forrest, Kreetassan Captain, Captain Maximilian Forrest (Mirror Universe) | 1 | 18 |
| Rick Worthy | Dr. Stewart | Jannar | 4 | 10 |
| Jeffrey Combs | Dr. Dale Sterling | Commander Thy'lek Shran, Krem | 1 | 11 |
| Matt Winston | Brian Kelso | Temporal Agent Daniels | 1 | 8 |
| Melinda Clarke | Lady Heather | Sarin | 8 | 1 |
| Glenn Morshower | Sheriff Brian Mobley | MacReady | 7 | 1 |
| Conor O'Farrell | Undersheriff McKeen | Burzaan, D'Jamat | 13 | 2 |
| Enrique Murciano | Det. Carlos Moreno | Tolaris | 5 | 1 |
| Eric Pierpoint | Cash Dooley | Harris (Section 31), Shiraht | 1 | 5 |
| Steven Culp | Lt. Mendes | Major J. Hayes | 1 | 5 |
| Derek Magyar | Paul O' Malley | Commander Kelby, Ensign Kelby (Mirror Universe) | 1 | 4 |
| Sean McGowan | Sean Wyatt | Corporal F. Hawkins | 1 | 4 |
| Daniel Dae Kim | Special Agent Beckman | Corporal D. Chang | 1 | 3 |
| Joseph Will | Walt Braun | Michael Rostov | 1 | 3 |
| Kellie Waymire | Carla Dantini | Crewman Cutler | 1 | 3 |
| Matt Kaminsky | Stewart Bradley | Cunningham | 1 | 2 |
| Nathan Anderson | Tom Finnerty | Sergeant N. Kemper | 1 | 2 |
| Abby Brammell | Debra, Jane Gallagher | Persis | 2 | 3 |
| Bill Cobbs | Harry Bastille | Emory Erickson | 1 | 1 |
| Bruce Davison | Avery Tinsdale | Menos | 1 | 1 |
| Corey Mendell Parker | Nae Allen | Paul Mayweather | 1 | 1 |
| Dennis Cockrum | Roger Edmonds | Alien Barkeep | 1 | 1 |
| Gregg Henry | Special Agent Rick Culpepper | Zho'Kaan | 1 | 1 |
| Maury Sterling | Det. Ken Martz | Tarquin | 1 | 1 |
| Melinda Page Hamilton | Jody Cambry | Feezal | 1 | 1 |
| Michael McGrady | Sheriff Brackett | Nausicaan Prisoner (Canamar) | 1 | 1 |
| Taylor Sheridan | Evan Peters | Jareb | 1 | 1 |
| Wade Williams | Mr. Reston | Garos | 1 | 1 |
| Zach Grenier | Dr. Kachler | Renth | 1 | 1 |
| John Rubinstein | Judge Crawford, Priest | Minister Kuvak, Mazarite Captain | 2 | 3 |
| Brad Greenquist | Taxi Manager | Captain Khata'n Zshaar, Rigelian Kidnapper #1 | 1 | 2 |
| Dennis Christopher | Homeless Guy, Richard Dorsey | Danik | 2 | 1 |
| Gregory Itzin | Norman Sterling | Admiral Black (Mirror Universe), Captain Sopek | 1 | 2 |
| Jeff Ricketts | Deliveryman | Alien Captain (Unnamed Axanar Captain), Keval | 1 | 2 |
| Mark Rolston | Sheriff | Captain Magh, Kuroda Lor-ehn | 1 | 2 |
| Michael Ensign | Judge Brenner | Dr. Oratt | 2 | 1 |
| Thomas Kopache | James Jasper | The Alien (Test subject), Tos | 1 | 2 |
| Mark Moses | Jeffrey Forsythe, Scott Shelton | Henry Archer | 2 | 2 |
| Michael Reilly Burke | Stuart Coombs | Koss | 1 | 3 |
| Molly Brink | Travel Manager | Lieutenant Talas | 1 | 3 |
| Annie Wersching | Dr. Prescott | Liana | 1 | 1 |
| Becky Wahlstrom | Suzy's Mom | Cogenitor | 1 | 1 |
| Brett Rickaby | Maintenance Man | Yerdrin Lek | 1 | 1 |
| Cullen Douglas | Manager | Suliban Commander | 1 | 1 |
| David Andrews | Officer Fromansky, Joe | Lorian | 3 | 1 |
| David Selburg | Benny Murdoch | Vulcan Captain | 1 | 1 |
| Diane DiLascio | Yvonne Hawkins | Riaan | 1 | 1 |
| Harry Groener | Peyton Tallman | Minister Nathan Samuels | 1 | 2 |
| Henri Lubatti | Charles Pinscher | Ethan Novakovich | 1 | 1 |
| Jeffrey Dean Morgan | Detective William Nolan | Damron | 1 | 1 |
| Lawrence Monoson | Toby Arcane | First Officer Matthew Ryan | 1 | 1 |
| Rey Gallegos | Carlos Salavar, Julio Maytorena | Crewman (in mess hall (2151)) | 2 | 1 |
| Robert Pine | Dr. Corey | Tavin | 1 | 1 |
| Tim Kelleher | IAB Investigator | Pell | 1 | 1 |
| Terrell Tilford | Adrian Graham, George Craven | Marab | 2 | 2 |
| James Avery | Preston Cash | General K'Vagh | 1 | 2 |
| Jim Beaver | Stanley Tanner | Admiral Daniel Leonard | 2 | 1 |
| Sam Witwer | Officer Casella | Sloth #3 (Technician #2) | 2 | 1 |
| Victor Bevine | John Mathers | Flight Controller (Flight dynamics officer: NX Project) | 2 | 1 |
| Bonita Friedericy | Mrs. Ludford | Rooney | 1 | 1 |
| Brigid Brannagh | Tammy Felton | Ruby | 1 | 1 |
| James Parks | Jonathan Wax | Bennings | 1 | 1 |
| Leland Orser | Morris Pearson | Loomis (21st century) | 1 | 1 |
| Matt Malloy | Max Sullivan | Grish | 1 | 1 |
| Rudolf Martin | Cameron Klinefeld | Ravis | 1 | 1 |
| Scott Klace | Carl Johnson | Goff | 1 | 1 |
| Alexandra Lydon | Angelica Carlos, Susan Hemmington | Jhamel | 2 | 1 |
| Jeff Kober | Roger Wilder, Walter Douglas Hicks | Traeg | 2 | 1 |
| Kara Zediker | Amber Durgee | T'Pau (2154) | 1 | 2 |
| Lee Arenberg | Joey | Gral (Tellarite) | 1 | 2 |
| David Kagen | MTB Rep | Klev | 1 | 1 |
| Dey Young | Agnes Goodwin | Keyla | 1 | 1 |
| Jamie McShane | Eddie Vonner, Jeff Berlin | Tactical Crewman | 2 | 1 |
| John Rosenfeld | Child Advocate | Mark Latrelle | 1 | 1 |
| Keith Szarabajka | Randy | Damrus | 1 | 1 |
| Larissa Laskin | Debbie Stein | Calla | 1 | 1 |
| Paul Rae | Wesley Jones | Bartender | 1 | 1 |
| Ric Sarabia | Fight Doctor | Alien #2 | 1 | 1 |
| Richard Wharton | Kenny Valdez | Jossen | 1 | 1 |
| Barbara Tarbuck | Paige Harmon | Chancellor Kalev | 2 | 1 |
| Tom Wright | Bob Harris, Jake Daniels | Ghrath | 2 | 1 |
| Geoff Meed | Roy McCall | Dee'Ahn Male | 1 | 1 |
| Jolene Blalock | Laura Garris | T'Mir | 1 | 1 |
| Lamont Thompson | SWAT Officer | ND Alien Pilgrim | 1 | 1 |
| Robert Mammana | Coach Tom Burns | Engineer | 1 | 1 |
| Tess Lina | Interpreter | Karyn Archer | 1 | 1 |
| Casey Biggs | Mr. Wilmot | Illyrian Captain | 1 | 1 |
| Christopher Goodman | Richard Adams | Thalen (Degra's Assistant) | 1 | 1 |
| Dan Warner | Campus Security Officer #2 | Officer #2 | 1 | 1 |
| Keith Allan | Fashion Photographer | Raan | 1 | 1 |
| Kristin Bauer | Kenli Johnson | Lieutenant Laneth | 1 | 1 |
| Leonard Kelly-Young | Al | Sonsorra | 1 | 1 |
| Patrick Fischler | Mr. Lee / Wolfie | Doctor Mercer | 1 | 1 |
| Vince Grant | Mr. Sorensen | Yarrick | 1 | 1 |
| Billy Mayo | Fire Chief James Walker | Officer #1 | 1 | 1 |
| Chelsea Bond | Rita Minden-Westanson | Alien Mother | 1 | 1 |
| Clay Wilcox | Ross Gibbs | Billy | 1 | 1 |
| Dave Power | Bryce Gundy | Ensign Jeffrey Pierce | 1 | 1 |
| David Figlioli | Green Poncho | Klingon Crewman (Weapons officer: Duras' Bird-of-Prey) | 1 | 1 |
| Gary Bristow | Chuck Hastings | Stablehand | 1 | 1 |
| Kate McNeil | Sharon Woodbury | Commander Collins | 1 | 1 |
| Kris Iyer | ER Surgeon | Deputy Director | 1 | 1 |
| Mark Chadwick | Chet Messner | Male Tarkalean | 1 | 1 |
| Sean Smith | Ted Goggle | Alien Crewman | 1 | 1 |
| Todd Stashwick | Mark Bunin | Talok | 1 | 1 |
| Steve Rankin | Troy Thompson | Colonel Phillip Green | 1 | 1 |
| Christine Romeo | Linda Kirkwood | Susan Khouri | 1 | 1 |
| Van Epperson | Judge | Alien Man | 1 | 1 |
← CSI: Crime Scene Investigation × Star Trek: Enterprise
Cast data from TVmaze, licensed CC BY-SA 4.0.