All 92 actors in both ER and Lost
92 actors have appeared in both ER and Lost, across 452 episodes. The most-credited is Sam Anderson, Dr. Jack Kayson in ER and Bernard Nadler in Lost.
| Actor | In ER | In Lost | Eps | Eps |
|---|---|---|---|---|
| Sam Anderson | Dr. Jack Kayson | Bernard Nadler | 19 | 20 |
| John Terry | Dr. David 'Div' Cvetic | Dr. Christian Shephard | 8 | 17 |
| L. Scott Caldwell | Dr. Rabb | Rose Nadler | 2 | 20 |
| Alan Dale | Al Patterson | Charles Widmore | 3 | 17 |
| M.C. Gainey | Darrion Walters | Mr. Friendly / Tom | 1 | 18 |
| Elizabeth Mitchell | Dr. Kim Legaspi | Juliet Burke | 14 | 3 |
| Fredric Lehne | Bum's Friend | Marshal Edward Mars | 1 | 9 |
| Paula Malcomson | Meg Riley | Colleen | 8 | 2 |
| Michael Bowen | Dante Valerio | Danny Pickett | 1 | 8 |
| Daniel Roebuck | Kyle Martin | Dr. Leslie Arzt | 1 | 7 |
| Mark Pellegrino | Nathan Conley | Jacob | 1 | 7 |
| François Chau | Neuro Resident | Dr. Marvin Candle, Dr. Pierre Chang, Dr. Edgar Halliwax | 2 | 13 |
| Julie Bowen | Roxanne Please | Sarah | 9 | 5 |
| Kevin Tighe | Sgt. Pete Mattimore | Anthony Cooper | 1 | 6 |
| Beth Broderick | Edith Landry | Diane Jansen | 1 | 5 |
| Kevin Durand | Mr. Mooney | Martin Keamy | 1 | 10 |
| Reiko Aylesworth | Chaplain Julia Dupree | Amy | 7 | 3 |
| Patrick Fischler | Chamber Tech | Phil | 1 | 8 |
| Clancy Brown | Dr. Ellis West | Kelvin Inman | 7 | 3 |
| Christopher Amitrano | Officer Hollis | Burditt | 12 | 1 |
| Lillian Hurst | Mrs. Landeta | Carmen Reyes | 1 | 5 |
| John Hawkes | P.A. | Lennon | 1 | 4 |
| Harold Perrineau | Isaac Price | Michael Dawson | 1 | 1 |
| Sheila Kelley | Coco Robbins | Zoe | 3 | 5 |
| Eric Lange | Rod Stillman | Stuart Radzinsky | 1 | 6 |
| Jon Gries | Defense Attorney Marty Nesmith | Roger Linus | 1 | 6 |
| Mary Mara | Loretta Sweet | Jill | 9 | 1 |
| Jeremy Shada | Bobby | Young Charlie | 1 | 2 |
| June Kyoto Lu | Zuin-an | Mrs. Paik | 1 | 3 |
| Sterling Beaumon | Danny Raskin | Young Ben | 1 | 5 |
| Billy Mayo | Detective Brannigan, Sheriff | Kilo | 2 | 1 |
| Brad William Henke | John | Bram | 1 | 5 |
| Frederick Koehler | Benjamin Coe | Seamus | 1 | 4 |
| Michael Cudlitz | Lang | Mike Walton | 1 | 2 |
| Ron Bottitta | Lionel Hines-Kennedy | Leonard | 1 | 2 |
| Tony Lee | Fah | Jae Lee | 1 | 3 |
| Lawrence Mandley | Jackson, Maintenance Man | Frainey | 2 | 1 |
| Rob McElhenney | Andy Fesh | Aldo | 1 | 2 |
| Suzanne Krull | Mary Grant | Lynn Karnoff | 1 | 2 |
| Tom Irwin | Gabriel Milner | Dan Norton | 1 | 2 |
| Andrew Connolly | Brit #1 | Brother Campbell | 1 | 1 |
| Jeff Perry | Officer Mitch Palnick | Duckett | 1 | 1 |
| Swoosie Kurtz | Tina Marie Chambliss | Emily | 1 | 1 |
| Dayo Ade | James Rollins | Justin | 1 | 2 |
| George Gerdes | Jim Riley | Mr. Springer | 2 | 1 |
| John Walcutt | Cancer Specialist | American Tourist | 2 | 1 |
| Robin Weigert | Nicole | Rachel Carlson | 1 | 2 |
| Aisha Hinds | Administrator | Sister | 1 | 1 |
| Jeannetta Arnette | Mrs. Hawkes | Calloway | 1 | 1 |
| Jim Piddock | Dr. Earl Whitehead | Frank | 1 | 1 |
| Monica Garcia | Benita Escobar | Nurse | 1 | 1 |
| Shaun Toub | Butler | Sami | 1 | 1 |
| Shishir Kurup | Pakastani Student | Donovan | 1 | 1 |
| Virginia Morris | Mrs. Brodie | Jan | 1 | 1 |
| Željko Ivanek | Bruce Resnick | Edmund | 1 | 1 |
| George Cheung | Mr. Chen, Mr. Fong | Chinese Ambassador | 4 | 1 |
| Alexis Rhee | Mrs. Paik | Older Woman | 1 | 1 |
| Geoffrey Rivas | Haven | Father Chuck | 1 | 1 |
| Jayne Taini | Marge Satterfield | Martha | 1 | 1 |
| Tim Halligan | Howard | Mark Hutton | 1 | 1 |
| Rebecca Hazlewood | Jaspreet | Nalini | 2 | 1 |
| Tim De Zarn | Mr. Krawczyk | Trevor | 2 | 1 |
| April Parker Jones | Joyce | Dr. Erica Stevenson | 1 | 1 |
| Chad E. Donella | Kevin Delaney | desk clerk | 1 | 1 |
| Juan Carlos Cantu | Mr. Rodriguez | Father Suarez | 1 | 1 |
| Rick Overton | Mr. McNamara | Matthew Reed | 1 | 1 |
| Victor Browne | Dr. Jensen | Shooter | 1 | 1 |
| Michael Dempsey | Mr. Beckwith | Foreman | 1 | 2 |
| Alexandra Krosney | Trina | Ellie | 1 | 1 |
| Ashleigh Ann Wood | Fiona | Nora | 1 | 1 |
| Cleo King | Mrs. Davies | Government Worker | 1 | 1 |
| Dean Norris | Bomb Specialist Clark | Howard Gray | 1 | 1 |
| Ivo Nandi | Emilio | Oldest Hunter | 1 | 1 |
| Jose Yenque | Wardell | Doctor | 1 | 1 |
| Scott Paulin | Dr. Kirsch | Sullivan | 1 | 1 |
| Amy Stewart | Linsey Cordova | Mother | 2 | 1 |
| Larry Joshua | Lomas | LAX Customs Official | 1 | 1 |
| Stewart Finlay-McLennan | Mr. Tanner | Laurence | 1 | 1 |
| William Sanderson | Mr. Percy | Oldham | 1 | 1 |
| Eyal Podell | Sammo | Young Man | 1 | 1 |
| Rebecca Tilney | Judy Cochran | Emily's Mother | 1 | 1 |
| Amanda Carlin | Librarian | ER Nurse | 1 | 1 |
| Emerson Brooks | Gonzalez | Tony | 1 | 1 |
| Jenni Blong | Elaine Griswold | Lindsey | 1 | 1 |
| Marlene Forte | Mrs. Gonzalez | Detective Mason | 1 | 1 |
| Teresa Huang | Vivian | Surgeon | 1 | 1 |
| Mandy June Turpin | Viv Rafferty | Florence | 1 | 1 |
| Phil Abrams | Rodney | Gellert | 1 | 1 |
| Colby French | Greg Becton | Uncle Doug | 1 | 1 |
| Larry Clarke | Male Lawyer | customer | 1 | 1 |
| Roxanne Day | Dianna | Diane | 1 | 1 |
| Nigel Gibbs | Matson | funeral director | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.