Actors in both American Horror Story and ER
117 actors have appeared in both American Horror Story and ER, across 476 episodes. The most-credited is John Aylward, Father Malechi in American Horror Story and Dr. Donald Anspaugh in ER.
| Actor | In American Horror Story | In ER | Eps | Eps |
|---|---|---|---|---|
| John Aylward | Father Malechi | Dr. Donald Anspaugh | 1 | 74 |
| Lyn Alicia Henderson | Det. Barker | Paramedic Pamela Olbes | 1 | 149 |
| Frances Conroy | Moira O'Hara (Old), Myrtle Snow, Shachath | Becky Riley | 26 | 2 |
| Yvonne Zima | Red | Rachel Greene | 1 | 22 |
| Adina Porter | Beverly Hope, Lee Harris, Sally Freeman | Mrs. Hopkins | 21 | 1 |
| Mare Winningham | Ms. Hazel Evers, Alicia Spencer, Rita Gayheart | Dr. Amanda Lee | 14 | 4 |
| Finn Wittrock | Tristan Duffy, Rudolph Valentino, Jether Polk | Thomas Yoder | 12 | 1 |
| Lisa Vidal | Stacey Ramos | Fire Lieutenant Sandy Lopez | 1 | 12 |
| Mädchen Amick | Mrs. Ellison | Wendall Meade | 3 | 10 |
| Fredric Lehne | Frank McCann | Bum's Friend | 7 | 1 |
| Celia Weston | Lillian Hemmings | Sister Maureen Chapman | 5 | 1 |
| Tara Karsian | Chef Bertie | Liz Dade | 3 | 7 |
| Malaya Rivera Drew | Det. Barrios | Katie Alvaro | 2 | 11 |
| Barbara Tarbuck | Mother Superior Claudia | Alice Presley | 5 | 1 |
| John Lacy | Mikey | Kevin Poole | 2 | 1 |
| Robin Weigert | Real Mama Polk, Coucilwoman Martha Edwards, Cynthia Potter | Nicole | 5 | 1 |
| Matthew Glave | Larry Gayheart | Dr. Dale Edson | 1 | 15 |
| Colby French | Officer | Greg Becton | 4 | 1 |
| Clea DuVall | Wendy Peyser | Katie Reed | 5 | 2 |
| Eric Stonestreet | Derek | Willie | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.