All 91 actors in both CSI: Crime Scene Investigation and Lost
91 actors have appeared in both CSI: Crime Scene Investigation and Lost, across 458 episodes. The most-credited is Marc Vann, Conrad Ecklie in CSI: Crime Scene Investigation and Doctor in Lost.
| Actor | In CSI: Crime Scene Investigation | In Lost | Eps | Eps |
|---|---|---|---|---|
| Marc Vann | Conrad Ecklie | Doctor | 67 | 4 |
| L. Scott Caldwell | Nora Parkes | Rose Nadler | 1 | 20 |
| Sam Anderson | Dr. Mercer | Bernard Nadler | 1 | 20 |
| Tania Raymonde | Tina Ellis | Alex Rousseau | 1 | 19 |
| M.C. Gainey | Frank Maddox | Mr. Friendly / Tom | 1 | 18 |
| William Mapother | Douglas Sampson | Ethan Rom, Dr. Goodspeed | 1 | 11 |
| Fredric Lehne | Curt Ritten, Frank Carrow | Marshal Edward Mars | 2 | 9 |
| Geoffrey Rivas | Det. Sam Vega | Father Chuck | 20 | 1 |
| Doug Hutchison | Dalton Betton, Nigel Crane | Horace Goodspeed | 3 | 7 |
| Michael Bowen | Jason Richter, Marty Cooperman | Danny Pickett | 2 | 8 |
| Daniel Roebuck | Frank Rosetti, Fred Paulsen | Dr. Leslie Arzt | 2 | 7 |
| Mark Pellegrino | Bruno Curtis, Elliot Perolta | Jacob | 2 | 7 |
| Neil Hopkins | Donny Drummer | Liam Pace | 1 | 6 |
| Henry Ian Cusick | James Nefarro | Desmond Hume | 1 | 5 |
| Titus Welliver | Mark Gabriel | Man in Black, Man #2 | 3 | 3 |
| Kevin Durand | Conner Daly | Martin Keamy | 1 | 10 |
| Ian Somerhalder | Tony Del Negro | Boone Carlyle | 1 | 4 |
| Patrick Fischler | Mr. Lee / Wolfie | Phil | 1 | 8 |
| Eric Lange | Kenny Bristol, Scott Tunnicliff | Stuart Radzinsky | 2 | 6 |
| John Hawkes | Terry Wicker | Lennon | 1 | 4 |
| Anthony Azizi | Adrian Dinan | Omar | 1 | 7 |
| Dean Norris | Phil Baker | Howard Gray | 3 | 1 |
| Elizabeth Mitchell | Melissa Winters | Juliet Burke | 1 | 3 |
| Harold Perrineau | Rev. Rhodes | Michael Dawson | 1 | 1 |
| Melissa Farman | Ashley Benson | Young Danielle Rousseau | 1 | 3 |
| Brett Cullen | John Nolan | Goodwin | 1 | 4 |
| Bruce Davison | Avery Tinsdale | Dr. Douglas Brooks | 1 | 2 |
| Chris Mulkey | Maurice Gallows, Mr. Young | Mike | 2 | 1 |
| Cynthia Watros | Barbie Aubrey | Libby Smith | 1 | 2 |
| Greg Grunberg | Len Bryant | Pilot Seth Norris | 1 | 2 |
| June Kyoto Lu | Mrs. Lee | Mrs. Paik | 1 | 3 |
| Michael Cudlitz | Josh Barston, Officer Spencer | Mike Walton | 2 | 2 |
| Tracy Middendorf | Belinda Martin, Bridget Willis | Bonnie | 2 | 2 |
| Raymond J. Barry | Arvin Thorpe, Philip Gerard | Ray | 4 | 1 |
| Sterling Beaumon | Drillbit | Young Ben | 1 | 5 |
| Brad William Henke | George Bartell | Bram | 1 | 5 |
| David S. Lee | Sergeant Varanski | Younger Charles Widmore | 1 | 2 |
| David Starzyk | Congressman Griffin, Fred Stearns | Brian Porter | 2 | 1 |
| Frederick Koehler | Danny Hillman | Seamus | 1 | 4 |
| Jeff Perry | George Stark, Vince Grady | Duckett | 2 | 1 |
| John Dixon | Tom Krandall | Flight Attendant #2, JD | 1 | 3 |
| Josh Randall | NTSB Investigator | Nathan | 1 | 1 |
| Reiko Aylesworth | Chandra Moore | Amy | 1 | 3 |
| Lindsey Ginter | Mr. Daniels | Sgt. Sam Austen | 1 | 2 |
| Robin Weigert | Dr. Valerie Dino | Rachel Carlson | 1 | 2 |
| Tom Irwin | Roy Logan | Dan Norton | 1 | 2 |
| Billy Mayo | Fire Chief James Walker | Kilo | 1 | 1 |
| Brian Goodman | Derek Paul | Ryan Pryce | 1 | 3 |
| Dariush Kashani | Amir Sayeed | Haddad | 1 | 1 |
| James Lesure | Dr. Emmett | Dr. Hamill | 1 | 1 |
| Jeannetta Arnette | Mrs. Spencer | Calloway | 1 | 1 |
| Kristin Richardson | Eva | Jessica | 1 | 1 |
| Monica Garcia | Mrs. Parker | Nurse | 1 | 1 |
| Skyler Stone | Alex Friel | EMT | 1 | 1 |
| Zack Ward | Steve Card | Marc | 1 | 1 |
| David H. Lawrence XVII | Car Wash Manager | Cab Driver | 1 | 2 |
| Susan Gibney | Charlotte Meridian | Melissa Dunbrook | 2 | 1 |
| Anne Bedian | Officer Linda Mendosa | Amira | 1 | 1 |
| Jodi Lyn O'Keefe | Kaye Shelton | Ava | 1 | 1 |
| Keir O'Donnell | Ken Richmond | Thomas | 1 | 1 |
| Kevin Rankin | Shawn Curtis | Jerry | 1 | 1 |
| Lindsay Frost | Marjorie Wescott | Sabrina | 1 | 1 |
| Monica Barladeanu | Emily Rey | Gabriella Busoni | 1 | 1 |
| Skye McCole Bartusiak | Susan Lester | Young Kate | 1 | 1 |
| Andrea Roth | Lyford's Sister | Harper Stanhope | 1 | 1 |
| Chad E. Donella | Vincent DeCarlo | desk clerk | 1 | 1 |
| DJ Qualls | Henry Briney | Johnny | 1 | 1 |
| Shawn Doyle | Archibald Lopez | Duncan Forrester | 1 | 1 |
| Victor Browne | Benjamin Fowler | Shooter | 1 | 1 |
| Željko Ivanek | Melton | Edmund | 1 | 1 |
| Alexandra Krosney | Silver | Ellie | 1 | 1 |
| Cleo King | Lucy | Government Worker | 1 | 1 |
| Eyal Podell | Kevin Stern | Young Man | 1 | 1 |
| Ivo Nandi | Max Girard | Oldest Hunter | 1 | 1 |
| Scott Paulin | Dr. Parker | Sullivan | 1 | 1 |
| Amanda Carlin | Margaret Shorey | ER Nurse | 1 | 1 |
| Larry Joshua | Zach Alfano | LAX Customs Official | 1 | 1 |
| Robert Dahey | Plastic Surgeon | Poor Man | 1 | 1 |
| Tim De Zarn | Mr. Carlton | Trevor | 1 | 1 |
| Jonathan Arthur | Andrew Jimenez | Simmons | 1 | 1 |
| Kevin E. West | Ray Gaynor | Detective Calderwood | 1 | 1 |
| Larry Clarke | Detective Sulik | customer | 1 | 1 |
| Raymond Ma | Sammy | Efren Salonga | 1 | 1 |
| Sundra Oakley | Laurent's Wife | Lawyer | 1 | 1 |
| Colby French | Officer Davis | Uncle Doug | 2 | 1 |
| Holland Roden | Kira Dellinger | Emily | 1 | 1 |
| Marlene Forte | Mrs. Pamela Gentry | Detective Mason | 1 | 1 |
| Kayren Butler | Rita | Doctor | 1 | 1 |
| Roxanne Day | April Lewis | Diane | 1 | 1 |
| Matt Hoffman | Owen DeMarcus | Jed | 1 | 1 |
| Amy Stewart | Melissa Humphreys | Mother | 1 | 1 |
← CSI: Crime Scene Investigation × Lost
Cast data from TVmaze, licensed CC BY-SA 4.0.