All 113 actors in both Friends and Seinfeld
113 actors have appeared in both Friends and Seinfeld, across 416 episodes. The most-credited is Maggie Wheeler, Janice Hosenstein in Friends and Cynthia in Seinfeld.
| Actor | In Friends | In Seinfeld | Eps | Eps |
|---|---|---|---|---|
| Maggie Wheeler | Janice Hosenstein | Cynthia | 19 | 1 |
| Richard Fancy | Mr. Posner | Mr. Lippman, Mr. Breckman | 1 | 10 |
| Jessica Hecht | Susan Bunch | Lindsay | 13 | 2 |
| Bob Balaban | Frank Buffay Sr. | Russell Dalrymple | 1 | 6 |
| Jon Favreau | Pete Becker | Eric the Clown | 6 | 1 |
| Larry Hankin | Mr. Heckles | Tom Pepper (Kramer) | 5 | 2 |
| Steve Hytner | Mr. Thompson | Bania | 1 | 6 |
| Mike Hagerty | Mr. Treeger | Rudy | 5 | 1 |
| Victor Raider-Wexler | Doctor | Doctor | 1 | 4 |
| Debra Jo Rupp | Alice Knight | Katie | 6 | 2 |
| Steve Ireland | Mr. Zelner | Music Guy | 6 | 1 |
| Jon Lovitz | Steve | Gary Fogel | 2 | 1 |
| Lynn Clark | Danielle | Vanessa | 1 | 2 |
| Tim DeKay | Marc | Kevin | 1 | 2 |
| Alex Kapp | Stephanie | Maura | 1 | 1 |
| Dale Raoul | Mrs. Verhoeven | Dental Patient | 1 | 1 |
| Denise Richards | Cassie Geller | Molly | 1 | 1 |
| Gina Hecht | Richard's Date | Dana Foley | 1 | 3 |
| Ivana Miličević | Kori Weston | Patty | 1 | 1 |
| James Hong | Hoshi | Bruce | 1 | 1 |
| Jennifer Coolidge | Amanda | Jodi | 1 | 1 |
| Peter Dennis | Sherman Whitfield | Lew | 1 | 1 |
| Angela Featherstone | Chloe | Cindy | 2 | 1 |
| Kristin Davis | Erin | Jenna | 1 | 2 |
| Lee Arenberg | The Man | Mike | 1 | 2 |
| Michele Maika | Kiki | Kim | 2 | 1 |
| Lawrence Mandley | Security Guard | Larry, Larry the Cook, Manager | 1 | 6 |
| Christine Taylor | Bonnie | Ellen | 3 | 1 |
| Fred Stoller | Stu, The Waiter | First Man in Hockey Audience, Fred Yerkes | 2 | 2 |
| Tucker Smallwood | Mr. Tyler | Malcolm, Man in Mercedes, The Photographer | 1 | 3 |
| Andrea Bendewald | Megan | Celia | 1 | 1 |
| Dorien Wilson | Mr. Douglas, Mr. Kogen | Alec | 3 | 1 |
| Evie Peck | Nurse | Woman | 2 | 1 |
| JoNell Kennedy | Nurse #1 | Secretary | 1 | 1 |
| Judy Kain | The Casting Director | Lorraine | 1 | 1 |
| Mark Daniel Cade | The Doctor | Other Walter | 1 | 2 |
| Oliver Muirhead | The Jeweler | Lubeck | 1 | 1 |
| Rena Sofer | Katie | Mary Ann | 1 | 1 |
| Richard Gant | Dr. Rhodes | Fred | 1 | 2 |
| Carol Mansell | Jackie's Friend | Mother | 1 | 2 |
| Maurice Godin | Sid | Misha | 2 | 1 |
| Pat Finn | Dr. Roger | Joe Mayo | 2 | 1 |
| Cathy Lind Hayes | Dr. Biely | Woman Behind Elaine | 1 | 1 |
| Cheryl Francis Harrington | Interviewer | Waitress | 1 | 1 |
| Chris Parnell | Bob | NBC Executive | 1 | 1 |
| Daniel Hagen | The Casting Director | Rick | 1 | 1 |
| Frank Novak | Gambler | Clerk | 1 | 1 |
| Harry Van Gorkum | Don | Craig | 1 | 1 |
| Jennette Robbins | Cynthia | Keri | 1 | 1 |
| John Apicella | Mr. Bowmont | Repairman | 1 | 1 |
| Julia Campbell | Whitney | Lisi | 1 | 1 |
| Kevin Ruf | The Porsche Owner | Security Guard | 1 | 1 |
| Mark Fite | The Salesman | Jack | 1 | 1 |
| Michael D. Roberts | The Head Librarian | Roger Ipswich | 1 | 1 |
| Molly Hagan | Sarah | Sister Roberta | 1 | 1 |
| Patrick Kerr | The Manager | La Forge - Clerk | 1 | 1 |
| Richard Roat | Burt | Dr. Berg | 1 | 1 |
| Mark Roberts | The Director | Seth | 2 | 1 |
| Alec Mapa | The Housekeeper | Paul | 1 | 1 |
| Amy Hill | The Woman | Kim | 1 | 1 |
| Anita Barone | Carol Willick | Gail | 1 | 1 |
| Barry Diamond | Phone Guy | Pat Buckles | 1 | 1 |
| Cindy Lu | The Accountant | Worker | 1 | 1 |
| David Moreland | Mel | Mr. Parry | 1 | 1 |
| Fritzi Burr | Mrs. Tedlock, Mrs. Weinberg | Mah-Jongg Lady | 2 | 1 |
| Heather Medway | Kristen | Laura | 1 | 1 |
| Jana Marie Hupp | Mindy Hunter | Sasha | 1 | 1 |
| Janice Davies | Woman on Bench | Bldg 'B' | 1 | 1 |
| Jeanette Miller | The Elderly Woman | Old Woman | 1 | 1 |
| Kim Gillingham | Angela | Assistant | 1 | 1 |
| Leesa Bryte | Leslie | Secretary | 1 | 1 |
| Lyn Alicia Henderson | The Ticket Agent | Clerk | 1 | 1 |
| Markus Flanagan | Robert | Charles | 1 | 1 |
| Merrin Dungey | The Museum Official | Cashier | 1 | 1 |
| Michael Kagan | Terry | Willie | 1 | 1 |
| Mimi Lieber | Mary Therese | Rula | 1 | 1 |
| Myra Turley | Nurse | Foreman | 1 | 1 |
| Patrick Bristow | The Stage Manager | Wig Master | 1 | 1 |
| Ralph Manza | The Old Man | Gepetto | 1 | 1 |
| Sara Rose Peterson | Elizabeth Hornswoggle | Claire | 1 | 1 |
| Stan Sellers | Manager | Cop #2, McAdam | 1 | 2 |
| Terry Rhoads | The Maitre'd | Father | 1 | 1 |
| Anthony Cistaro | Gate Attendant | Joel | 1 | 1 |
| Brian Posehn | Messenger | Artie | 1 | 1 |
| Harry S. Murphy | The Man at the Wedding | Office Manager | 1 | 1 |
| Jack Betts | Tom | Mr. Green | 1 | 1 |
| Karla Tamburrelli | The Teacher | Daphne | 1 | 1 |
| Kyle Gass | Lowell | Smoker | 1 | 1 |
| Rhoda Gemignani | Mrs. Potter | Woman with Elaine | 1 | 1 |
| Rick Fitts | The Professor | Dentist | 1 | 1 |
| Taylor Negron | Allesandro | Hairdresser | 1 | 1 |
| Alex Craig Mann | The Casting Assistant | Student #2 | 1 | 1 |
| Christopher Carroll | Bank Officer | Maitre'd | 1 | 1 |
| Christopher Darga | The Director | Driver | 1 | 1 |
| Darlene Kardon | Aunt Millie | Mrs. Lupchek | 1 | 1 |
| Dedee Pfeiffer | Mary Ellen | Victoria | 1 | 1 |
| Elisabeth Sjoli | Tia | Woman | 1 | 1 |
| Ellen Gerstein | Aunt Lisa | Carol | 1 | 1 |
| Iqbal Theba | Joey's Doctor | Cabbie | 1 | 1 |
| Jane Edith Wilson | Jackie [DVD only] | Woman | 1 | 1 |
| Kevin McDonald | Guru Saj | Denim Vest | 1 | 1 |
| Louisa Abernathy | Lydia | Nurse | 1 | 1 |
| Paul Gleason | Jack | Cushman | 1 | 1 |
| Roger Eschbacher | The Photographer | Man with Cane | 1 | 1 |
| Tom Bailey | Bob | Cop #2 | 1 | 1 |
| Kellie Waymire | Colleen | Vivian | 1 | 1 |
| Marilyn Tokuda | Nurse | Woman #2 | 1 | 1 |
| Shashi Bhatia | Acting Student #1 | Flower Girl | 1 | 1 |
| Wesley Thompson | The Locksmith | Poker Player #2 | 1 | 1 |
| Chip Chinery | Another Scientist | Co-Worker #1 | 1 | 1 |
| Mailon Rivera | The Waiter | Cop #1 | 1 | 1 |
| Vic Helford | The Conductor | Tom | 1 | 1 |
| Steve Susskind | The Priest | Customer #1 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.