Actors in both ER and How I Met Your Mother
122 actors have appeared in both ER and How I Met Your Mother, across 539 episodes. The most-credited is Joe Nieves, Tony Dejesu in ER and Carl in How I Met Your Mother.
| Actor | In ER | In How I Met Your Mother | Eps | Eps |
|---|---|---|---|---|
| Joe Nieves | Tony Dejesu | Carl | 1 | 21 |
| Marshall Manesh | Babu | Ranjit | 1 | 19 |
| Busy Philipps | Dr. Hope Bobeck | Rachel | 14 | 1 |
| Joe Manganiello | Officer Litchman | Brad Morris | 4 | 7 |
| Kal Penn | Narajan | Kevin | 1 | 8 |
| Michael Gross | John "Jack" Carter | Alfred Mosby | 6 | 3 |
| Frances Conroy | Becky Riley | Loretta | 2 | 6 |
| J.P. Manoux | Dr. Dustin Crenshaw, Mime | Not Moby | 24 | 1 |
| Monique Edwards | Callie | Producer | 1 | 4 |
| Kevin Michael Richardson | Patrick | Stan | 3 | 1 |
| Cristine Rose | Mrs. Martinez | Virginia Mosby | 1 | 6 |
| Bruce Gray | Carter Board member, Dr. Munch | Yuthers, Senior Partner | 2 | 3 |
| Brad Grunberg | Masked Man | Bruno | 1 | 1 |
| Dan Lauria | Rick Simpson | Nolan | 1 | 1 |
| K Callan | Kelly Robinson | Grandma Lois | 1 | 3 |
| George Cheung | Mr. Chen, Mr. Fong | Korean Elvis | 4 | 1 |
| Anne Dudek | Paula Gamble | Natalie | 1 | 2 |
| Ernie Hudson | Colonel James Gallant | Ernie Hudson | 2 | 1 |
| Jayden Lund | Workman #2 | Bill | 1 | 2 |
| Judith Drake | Greta | Bernice | 1 | 3 |
Cast data from TVmaze, licensed CC BY-SA 4.0.