All 64 actors in both Seinfeld and The Golden Girls
64 actors have appeared in both Seinfeld and The Golden Girls, across 360 episodes. The most-credited is Richard Herd, Wilhelm in Seinfeld and Ernie in The Golden Girls.
| Actor | In Seinfeld | In The Golden Girls | Eps | Eps |
|---|---|---|---|---|
| Richard Herd | Wilhelm | Ernie | 12 | 1 |
| Barney Martin | Morty | Karl | 23 | 1 |
| Ellen Albertini Dow | Momma | Lillian, Mrs. Leonard, Sarah | 1 | 3 |
| Frances Bay | Mabel | Claire | 3 | 1 |
| Jessica Lundy | Hostess, Naomi | Janet Devereaux | 2 | 2 |
| Sheree North | Babs | Virginia Hollingsworth | 2 | 2 |
| Siobhan Fallon Hogan | Tina | Abby | 3 | 1 |
| Earl Boen | Eulogist | Father Salerno, Reverend | 1 | 2 |
| Montrose Hagins | Old Woman, Woman in Theatre | Libby | 2 | 1 |
| Timothy Stack | Dwayne | Agent Bell | 1 | 2 |
| Alex Trebek | Alex Trebek | Himself | 1 | 1 |
| Barbara Alyn Woods | Debby | Woman | 1 | 1 |
| Charles Levin | Mohel | Coco | 1 | 1 |
| Edward Winter | Mr. Stevenson | John Quinn | 1 | 1 |
| James Karen | Mr. Canterman | Raymond | 1 | 1 |
| Lois Nettleton | Mrs. Enright | Jean | 1 | 1 |
| Marcelo Tubert | Father | Raoul | 1 | 1 |
| Ralph Manza | Gepetto | Augustine Bagatelli | 1 | 1 |
| Richard Venture | Leonard West | Milton | 1 | 1 |
| Tony Plana | Manny | Lt. Alvarez | 1 | 1 |
| Dom Irrera | Ronnie | Produce Clerk, Waiter | 1 | 2 |
| Gordon Jump | Mr. Thomassoulo | Leonard Barton | 2 | 1 |
| Matt McCoy | Lloyd Braun | Father Avery | 2 | 1 |
| Raye Birk | Mr. Pless | Caterer | 1 | 2 |
| Richard Roat | Dr. Berg | Al Beatty, Kendall | 1 | 2 |
| Tom La Grua | Kernis | Jimmy, Vinnie | 1 | 2 |
| Angelo Tiffe | Delivery Man | Harry | 1 | 1 |
| Biff Yeager | Mr. Heyman | Bellboy | 1 | 1 |
| Bill Erwin | Sid | Mr. Hubbard | 2 | 1 |
| Danny Breen | Guy with Glasses | Emcee | 1 | 1 |
| Deborah May | Elsa | Liz | 1 | 1 |
| Edie McClurg | Mrs. Oliver | Nurse DeFarge | 1 | 1 |
| F. William Parker | Country Doctor | The Minister | 1 | 1 |
| Molly Hagan | Sister Roberta | Caroline | 1 | 1 |
| Suanne Spoke | Customer | Girl in the Lobby | 1 | 1 |
| Toni Sawyer | Tenant #1 | Lois | 1 | 1 |
| Flo Di Re | Receptionist | Gina, Young Sophia | 1 | 2 |
| Mimi Cozzens | Mrs. Canterman | Lillian, Susan Dodds | 1 | 2 |
| Doug Ballard | Eddie | Police Officer | 1 | 1 |
| James Lashly | Assistant | The Driver | 1 | 1 |
| Lane Davies | MacKenzie | Peterson | 1 | 1 |
| Lou Cutell | Howard Cooperman, MD | Irving | 1 | 1 |
| Magda Harout | Stella | Woman | 1 | 1 |
| Nancy Lenehan | Volunteer | Nun | 1 | 1 |
| Nick Jameson | Horst | Minstrel | 1 | 1 |
| Tom Dahlgren | Priest | Major Barker | 1 | 1 |
| Bill Gratton | Postal Official | Man #1 | 1 | 1 |
| Cleto Augusto | Scott | Photographer | 1 | 1 |
| Glenn Shadix | Harold | Musician | 1 | 1 |
| Margaret Reed | Mary | Pregnant Woman | 1 | 1 |
| Roy Brocksmith | Landlord | William | 1 | 1 |
| Todd Jeffries | Blaine | Policeman | 1 | 1 |
| Blake Gibbons | Lyle | Elvis Impersonator | 1 | 1 |
| Darlene Kardon | Mrs. Lupchek | Woman | 1 | 1 |
| Eric Poppick | Maurice | Waiter | 1 | 1 |
| Kyle T. Heffner | Bizarro George | Young Salvador | 1 | 1 |
| Marcia Firesten | Jenny | Dr. Watkins | 1 | 1 |
| Neal Lerner | The Shusher | Rabbi | 1 | 1 |
| Stephen Lee | Conrad | Dwayne | 1 | 1 |
| Allen Bloomfield | Polar Bear | Abe | 1 | 1 |
| Fritzi Burr | Mah-Jongg Lady | Ruth | 1 | 1 |
| Raf Mauro | Car Washer | Bartender | 1 | 1 |
| Wayne C. Dvorak | Teacher | Maitre D' | 1 | 1 |
| Ursaline Bryant | Dr. Wexler | Hooker #3 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.