All 100 actors in both Grey's Anatomy and It's Always Sunny in Philadelphia
100 actors have appeared in both Grey's Anatomy and It's Always Sunny in Philadelphia, across 654 episodes. The most-credited is Artemis Pebdani, Sharon Peters in Grey's Anatomy and Artemis Dubois in It's Always Sunny in Philadelphia.
| Actor | In Grey's Anatomy | In It's Always Sunny in Philadelphia | Eps | Eps |
|---|---|---|---|---|
| Artemis Pebdani | Sharon Peters | Artemis Dubois | 1 | 19 |
| Lynne Marie Stewart | Nurse | Bonnie Kelly | 1 | 19 |
| Sandy Martin | Sally | Mrs. Mac | 2 | 18 |
| Lance Barber | Phil | Bill Ponderosa | 1 | 11 |
| Winston Story | Dr. Leo Byrider | Nurse | 20 | 1 |
| Mary Lynn Rajskub | Marion Steiner | Gail the Snail | 1 | 5 |
| Nate Mooney | Randy | Ryan McPoyle | 1 | 9 |
| BJ Tanner | Tuck | Customer #1 | 8 | 1 |
| Joy Osmanski | Intern Lucy | Jackie | 11 | 1 |
| Marshall Allman | Jeremy West | Bezzy | 2 | 1 |
| Tom Bower | Mr. Schultz | Pop-Pop | 1 | 2 |
| Jeremy Rabb | Resident, ER Doctor | Ugly Guy | 11 | 1 |
| Jessica Collins | Denise | Jackie Denardo | 1 | 3 |
| Joel Murray | ICE Agent Martin Fields | Andrew Kane | 1 | 1 |
| Judi Barton | Board Member | Nurse | 1 | 1 |
| Kari Coleman | Mother | Margie | 1 | 1 |
| Lex Medlin | Byron Gibbis | A.D. | 1 | 1 |
| Ravi V. Patel | Tamir | Lawyer | 1 | 1 |
| Sam Song Li | Mitch Lau | Jie | 1 | 1 |
| Alixandrée Claire | Nurse | Candy | 5 | 1 |
| Anna Maria Horsford | Nurse Elizabeth Fallon | Janet Barrett | 2 | 1 |
| Marcuis Harris | Rob Mays | Pimp (Pepper Jack) | 1 | 2 |
| Peter MacKenzie | Warren Kramer | Doctor | 1 | 2 |
| Phil Abrams | Dr. Jim Nelson | Doctor | 3 | 1 |
| Andrée Vermeulen | Liz | Vet | 1 | 1 |
| Anthony Hill | Dr. Winston Ndugu | Black Mac | 1 | 1 |
| Audrey Wasilewski | Nicole Waldman | Nurse | 1 | 1 |
| Cleo King | Robin | Nurse Wendy | 3 | 1 |
| Dona Hardy | Grace Bickham | Old Woman | 1 | 1 |
| Eileen Fogarty | Mrs. Chen's Sister | Female Bank Clerk | 1 | 1 |
| Elaine Kao | NICU Nurse | Professor Lee | 1 | 1 |
| Eve Sigall | Old Lady | Waiter's Mom | 1 | 1 |
| Francesca P. Roberts | Mrs. Bird | Sandy Lawler | 1 | 1 |
| Gerald Downey | Dr. Kenton Giles | Bill Larkin | 1 | 1 |
| Gillian Vigman | Gillian Mendelson | Karen | 1 | 1 |
| Harley Graham | Francesca McNeil | Young Dee | 4 | 1 |
| Hugh Holub | Dr. Ben Warren | Colin Clark (Judge) | 1 | 1 |
| Jack Axelrod | Really Old Man, Charlie Yod | Father O'Grady | 3 | 1 |
| Jim Lau | Examiner #4 | Asian Worker | 2 | 1 |
| Josh Stamberg | Tommy Walker | Ari Frenkel | 1 | 1 |
| Karly Rothenberg | Ruth Bennet | Another Mom | 1 | 1 |
| René Auberjonois | Neil Sheridan | Dr. Larry Meyers | 1 | 1 |
| Robert Pine | Vincent | Jack Mara | 1 | 1 |
| Ron Butler | Jordan Shouse | Scientist | 1 | 1 |
| Rosalie Ward | Melissa Corso | Sally | 1 | 1 |
| Suzy Nakamura | Jenn Smith | Tabitha | 1 | 1 |
| Tommy Dewey | Mike | Harris Marder | 1 | 1 |
| Coby Larinde | EMT | EMT #2 | 1 | 1 |
| Jackie Tohn | Lindsay Allyn | Asriel | 1 | 1 |
| Jessy Hodges | Donna | Moderator | 1 | 1 |
| Jim Ortlieb | Jack O'Brien | Belka Maier | 1 | 1 |
| John Walcutt | Paul Cotler | Doctor | 1 | 1 |
| Karen Y. McClain | Reaves | Faith | 1 | 1 |
| Karl T. Wright | Divorce Mediator | Scott | 1 | 1 |
| Kathleen Mary Carthy | Mrs. Miller | Female Doctor | 1 | 1 |
| Rey Borge | Bailiff | Tony | 1 | 1 |
| Antonio D. Charity | Michael Nelson | Picketer #2 | 1 | 1 |
| Brooke Baumer | Obstetrician | Marlene | 1 | 1 |
| Cantrell Harris | Rescue Worker | Orderly | 1 | 1 |
| Casey Sander | Casey | Group Leader | 1 | 1 |
| Christine Horn | Ericka | Cop | 1 | 1 |
| Gary Kraus | Louis Cardon | Dad | 1 | 1 |
| Gilberto Ortiz | Gish | Teen Boy | 1 | 1 |
| Jeff Howard | Tyler's Dad | Southern Dad | 1 | 1 |
| Laura Niemi | Cynthia | Second Executive | 1 | 1 |
| Lisa Ann Walter | Shirley Gregory | Melissa Schemmenti | 2 | 1 |
| Maria Russell | Guard #2 | Police Officer | 1 | 1 |
| Michael Merton | Dexter | Neighborhood Leader | 1 | 1 |
| Randy Sklar | Pete Weitzman | Fat Michael | 1 | 1 |
| Andrew Thacher | Sean | Detective | 1 | 1 |
| Barry Livingston | Wayne Sheehan | Third Executive | 1 | 1 |
| Brady Smith | Mike Purdy | Tony | 1 | 1 |
| Burl Moseley | Jason Cooper | Maxwell | 1 | 1 |
| Graham Clarke | Weather Guy 'Len' | Dr. Felix Coleman | 1 | 1 |
| Jim Cashman | Clown | John | 1 | 1 |
| Lawrence Mandley | Chester Jones | Black Dude | 1 | 1 |
| Randy Thompson | Frank Waring | Bald Man | 1 | 1 |
| Suzanne Ford | Hazel Parker | Cynthia | 1 | 1 |
| Tacey Adams | Widow Amos | Psych Professor | 1 | 1 |
| Wendy Braun | Captain LeVantine | Lauren | 1 | 1 |
| Ammar Daraiseh | Aide | Shopkeeper | 1 | 1 |
| Chris Aquilino | Clark | Security Guard | 1 | 1 |
| Chris Hendrie | Dr. Harry Victor | Detective | 1 | 1 |
| Edward James Gage | Adam Keller | Phil | 1 | 1 |
| Iman Crosson | Sheldon Salley | Patrick | 1 | 1 |
| Mark Daugherty | Evan | Caddy | 1 | 1 |
| Treisa Gary | Beth | Teacher | 1 | 1 |
| Brandon Molale | Beefy Patient | Big Eric | 1 | 1 |
| Cory Blevins | Surgeon #2 | Benjamin's Dad | 1 | 1 |
| James Moses Black | Duncan | Male Executive | 1 | 1 |
| Jason Sklar | Jake Weitzman | DJ Squirrely D | 1 | 1 |
| Kirk Bovill | Brian Turner | Colonel Wahington | 1 | 1 |
| Leslie Miller | Danisha Sterling | Black Dee | 1 | 1 |
| Robert Towers | Zayde | Buster the Jockey | 1 | 1 |
| Dougald Park | Lawyer | 2nd Man at Art Show | 1 | 1 |
| Marcus Choi | Young Man | Moviegoer #1 | 1 | 1 |
| Sonia Jackson | Patient #1 | Crack Whore | 1 | 1 |
| Brian McGovern | Dr. Randall Lutton | Tom | 1 | 1 |
| Renee Pezzotta | E.R. Nurse | Average Looking Woman | 1 | 1 |
| Timothy E. Goodwin | Len | Christmas Dad | 1 | 1 |
← Grey's Anatomy × It's Always Sunny in Philadelphia
Cast data from TVmaze, licensed CC BY-SA 4.0.