All 120 actors in both Grey's Anatomy and How I Met Your Mother
120 actors have appeared in both Grey's Anatomy and How I Met Your Mother, across 675 episodes. The most-credited is Joe Nieves, Michael Baker in Grey's Anatomy and Carl in How I Met Your Mother.
| Actor | In Grey's Anatomy | In How I Met Your Mother | Eps | Eps |
|---|---|---|---|---|
| Joe Nieves | Michael Baker | Carl | 1 | 21 |
| Charlene Amoia | Dr. Kate Lachman | Wendy | 1 | 17 |
| Bill Fagerbakke | Roy Mackinaw | Marvin Eriksen Sr. | 1 | 12 |
| Robert Belushi | TV Announcer | Linus | 1 | 12 |
| Floriana Lima | Nora Young | Haley | 9 | 1 |
| Sarah Chalke | Casey Hedges | Stella Zinman | 1 | 8 |
| Abigail Spencer | Dr. Megan Hunt | BlahBlah | 15 | 1 |
| Frances Conroy | Eleanor | Loretta | 1 | 6 |
| Ben Vereen | Archie | Sam Gibbs | 1 | 5 |
| Peter Gallagher | Dr. David Hamilton | Professor Vinick | 9 | 1 |
| Vicki Lewis | Harriet | Dr. Sonya | 1 | 4 |
| Nazanin Boniadi | Amrita | Nora | 1 | 8 |
| Edward Herrmann | Intern Norman | Reverend Lowell | 3 | 1 |
| Kathleen M. Darcy | Anesthesiologist | Wedding Guest #2 | 10 | 1 |
| Anne Dudek | Elise Castor | Natalie | 1 | 2 |
| Mandy Moore | Mary Portman | Amy | 4 | 1 |
| Erin Cahill | Meg Shelley | Heather | 1 | 1 |
| K Callan | Janis | Grandma Lois | 1 | 3 |
| Sachin Bhatt | Vivek Delgadillo | Man #1 | 1 | 1 |
| Deanna Russo | Nola Marques | Brooke Bartholomay | 2 | 1 |
| Jayden Lund | Hulking Patient | Bill | 1 | 2 |
| Artemis Pebdani | Sharon Peters | Anna | 1 | 3 |
| John Duerler | Grant | Harlen Johnsen | 2 | 2 |
| Riley Thomas Stewart | Colin Anderson | Young Barney | 1 | 3 |
| Will Sasso | Jet / Maintenance Worker | Doug Martin | 2 | 2 |
| Amber Stevens West | Laurel Henson | Janet McIntyre | 1 | 2 |
| Amy Acker | Dr. Kathleen Shepherd | Penelope | 1 | 1 |
| Amy Gumenick | Becca Wells | Amanda | 1 | 1 |
| Collette Wolfe | Karin Taylor | Sarah | 1 | 1 |
| Ernie Hudson | Dr. Brad McDougall | Ernie Hudson | 1 | 1 |
| Jamie-Lynn Sigler | Dr. Laura Kaplan | Jillian | 1 | 1 |
| John Cho | Marshall Stone | Jeff Coatsworth | 1 | 1 |
| Karen Lew | Dr. Hoffman | Mrs. Hamaguchi | 1 | 1 |
| Meagen Fay | Paula | Janice Aldrin | 1 | 2 |
| Peter Breitmayer | Carson Methodist Doctor | Minnesota State Trooper | 1 | 1 |
| Peter Katona | Marcus Kane | Co-worker #1 | 1 | 1 |
| Robert Wisdom | Mr. Hamilton | McCracken | 1 | 1 |
| Seth Green | Nick Hanscom | Daryl LaCorte | 2 | 1 |
| Todd Stashwick | Mr. Kramer | Steve | 1 | 1 |
| Wayne Lopez | Paramedic #2 | Referee | 4 | 1 |
| David Haley | Paramedic #2 | Coach | 4 | 1 |
| Ewan Chung | Tech Guy | Carol, Co-Worker | 1 | 2 |
| John Getz | Michael Breyers | Bob Hewitt | 2 | 1 |
| Brooke Nevin | Tricia Hale | Amanda | 1 | 1 |
| Carlease Burke | Mrs. Gates | WPD Worker | 1 | 1 |
| Danny Strong | Paul | Trey Platt | 1 | 1 |
| Destiny Whitlock | Maddy Carlson | Little Girl | 1 | 1 |
| Jessica Gardner | Sarah Straughn | Wife #3 | 1 | 1 |
| Kevin Christy | Brady Sullivan | Sven #1 | 1 | 1 |
| Mary Gallagher | Mrs. Hamilton | Female Gate Agent | 1 | 1 |
| Scott Michael Morgan | Patient #2 | Glen | 1 | 1 |
| Stephanie Faracy | Mrs. Sullivan | Rhonda | 1 | 1 |
| Steve Hasley | Aaron Marshall | Walter | 1 | 1 |
| Stefanie Black | Roxie Meyers | Kelly | 1 | 2 |
| Alan Fudge | Ernie Shelton | Farmer Frank | 1 | 1 |
| Brian Letscher | Mr. Epley | Angry Guy | 1 | 1 |
| Casey Wilson | Courtney Hall | Obnoxious Woman | 1 | 1 |
| Courtney Ford | Jill Meyer | Vicky | 1 | 1 |
| John Sloan | David Pailey | Michael Girard | 1 | 1 |
| Jolie Jenkins | Heather Morton | Alexa | 1 | 1 |
| Joni Bovill | Dr. Marks | Officer McKie | 1 | 1 |
| Kathleen Rose Perkins | Sarah | Mary Beth | 1 | 1 |
| Lawrence Mandley | Chester Jones | Cab Driver #1 | 1 | 1 |
| Meghan Maureen McDonough | Rita Belmont | Veronica | 1 | 1 |
| Moon Unit Zappa | Kelly | Stacy | 1 | 1 |
| Nancy Travis | Allison Baker | Cheryl | 1 | 1 |
| Peter MacKenzie | Warren Kramer | Mr Horvath | 1 | 1 |
| Ryan Pinkston | Carlton Allyn | Kyle | 1 | 1 |
| Scott Allen Rinker | Toby | Host | 1 | 1 |
| Kyla-Drew Simmons | Mia James | Shondra | 1 | 2 |
| Rhomeyn Johnson | Manager | Cab Driver | 2 | 1 |
| Alyssa Shafer | Kelly Temple | Little Girl #2 | 1 | 1 |
| Drew Droege | Allan Lewis | Waiter | 1 | 1 |
| Elizabeth Bogush | Gia | Amanda | 1 | 1 |
| Gary Kraus | Louis Cardon | Wedding Videographer | 1 | 1 |
| J.P. Manoux | Danny Nelstadt | Not Moby | 1 | 1 |
| Jack Shearer | Jordan Franklin | Cab Driver | 1 | 1 |
| Michael Hagiwara | Charles Hyatt | Mr. Li | 1 | 1 |
| Nick Jaine | Tim | Sudeep | 1 | 1 |
| Ron Butler | Jordan Shouse | Proctor | 1 | 1 |
| Sean C. Graham | Baby's Dad | Wayne | 1 | 1 |
| Suzy Nakamura | Jenn Smith | Dr. Kirby | 1 | 1 |
| Jim Lau | Examiner #4 | Chinese Man | 2 | 1 |
| Amanda Loncar | Jackie Escott | Lydia | 1 | 1 |
| Anisha Adusumilli | Couples Therapist | Other Agent | 1 | 1 |
| Darryl Sivad | Justice of the Peace | Officer Roque | 1 | 1 |
| Justin Alston | CT Tech | Cool Black Man | 1 | 1 |
| Ken Takemoto | Trial Patient #1 | Elderly Chinese Man | 1 | 1 |
| Terrell Lee | Diplomatic Security Guard | Bouncer | 1 | 1 |
| Thomas Anthony Jones | Surgeon 1 | Man | 1 | 1 |
| Alec Medlock | Kid | Waiter | 1 | 1 |
| Cal Gibson | Larry Keys | Ryan | 1 | 1 |
| Emily Roche | Jo | Young Woman | 1 | 1 |
| Ethan Dizon | Sean | Ben | 1 | 1 |
| Jeffrey Muller | Code Team Person | Dancing Guy | 1 | 1 |
| Jonathan Craig Williams | Mr. Kirby | Cop | 1 | 1 |
| Ken Barnett | Freddie | Colton Dunn | 1 | 1 |
| Michael Antosy | Corey Jensen | Recruit | 1 | 1 |
| Michael Mantell | Tim Nolan | Ben | 1 | 1 |
| Ron Roggé | Fire Captain | Highway Cop #2 | 1 | 1 |
| Shelli Boone | Paula Glass | bridesmaid | 1 | 1 |
| Adam Kulbersh | Tommy | Kendall | 1 | 1 |
| Cinda Adams | Wendy Hayes | Wedding Guest #3 | 1 | 1 |
| Herbie Jackson | Adam | Kid #2 | 1 | 1 |
| Houston Rhines | Boy | Jerry | 1 | 1 |
| Jarrod Crawford | Dr. Oslow | Guy | 1 | 1 |
| Jeremy Glazer | Drew Hawkins | Bruce | 1 | 1 |
| Ping Wu | Seymour Glass | Old Man | 1 | 1 |
| Tahmus Rounds | Harry | Guitar Mom | 1 | 1 |
| Daniel Kash | Executive Two | Guy | 1 | 1 |
| Mark Cirillo | Mr. Holmes | Waiter | 1 | 1 |
| Michelle Noh | Sharon Peterson | Claire | 1 | 1 |
| Nancy Stone | June Peterson | Sketch Artist | 1 | 1 |
| Scarlett Lam | Ahn | Lucille | 1 | 1 |
| Shelby Zemanek | Clementine | Eight Year Old Robin | 1 | 1 |
| John Henry Canavan | Stewart Tyler | Trucker Hat Guy #2 | 1 | 1 |
| Mark Edward Smith | Gary | Bomb Squad Guy | 1 | 1 |
| Toussaint Waterman | Cop | Paramedic | 1 | 1 |
| Vince Cefalu | ND Patient | Punchy's dad | 1 | 1 |
| Jim Grollman | Bus Driver | Uncle Larry | 1 | 1 |
← Grey's Anatomy × How I Met Your Mother
Cast data from TVmaze, licensed CC BY-SA 4.0.