All 86 actors in both Night Court and Seinfeld
86 actors have appeared in both Night Court and Seinfeld, across 373 episodes. The most-credited is William Utay, Phil Sanders, Will Sanders, Ivan Brewster in Night Court and Dr. Korval in Seinfeld.
| Actor | In Night Court | In Seinfeld | Eps | Eps |
|---|---|---|---|---|
| William Utay | Phil Sanders, Will Sanders, Ivan Brewster | Dr. Korval | 35 | 1 |
| Estelle Harris | Easy Mary | Estelle Constanza | 3 | 29 |
| Barney Martin | Bum | Morty | 1 | 23 |
| Mel Tormé | Mel Tormé, Herb | Mel Tormé | 9 | 1 |
| Jack Riley | Beepo, Dr. Flick, Emil Dutton | Rider | 7 | 1 |
| Walter Olkewicz | Walter Plimp, Mr. Doyle, Mr. Freedman | Nick | 5 | 2 |
| Fred Applegate | Bob Marks, Mr. Platt, Robert Marks | Rick Levitan | 5 | 1 |
| Raf Mauro | Bum | Car Washer | 5 | 1 |
| Ron Ross | Dirk | Homeless Man | 5 | 1 |
| Timothy Stack | Mr. Marley, Tim Bond, Bill | Dwayne | 5 | 1 |
| Lisa Pescia | Flamona Jones | Joanne, Lisa | 1 | 4 |
| Al Ruscio | Mr. Fetty, Ralph Foley | Manager | 2 | 2 |
| Teri Hatcher | Kitty | Sidra | 1 | 3 |
| Biff Yeager | Bailiff, Bartender | Mr. Heyman | 2 | 1 |
| Susan Diol | Donna | Audrey | 2 | 1 |
| George Murdock | Detective Griffin, Hank Mire, Sergeant Foster | Testikov | 4 | 1 |
| John Del Regno | Monty | Manager | 1 | 1 |
| Lee Arenberg | Mr. Abraham, Mr. Dijilly | Mike | 2 | 2 |
| Louan Gideon | Heidi, Sonia Blair | Mrs. Hamilton | 3 | 1 |
| Melinda McGraw | Wendy | Angela | 1 | 1 |
| Raye Birk | Frank Pepitone, Dworkin, God No. 1 | Mr. Pless | 5 | 1 |
| Sam Lloyd | Balloon Salesman, Waiter | Ricky | 2 | 2 |
| Ralph Manza | Angelo, Jerome Chapel, Subway Commuter | Gepetto | 4 | 1 |
| Gordon Jump | Martin Glasgow | Mr. Thomassoulo | 1 | 2 |
| Michael Fairman | Judge Casement | Mr. Pensky | 2 | 1 |
| Stephen Root | Death, Mr. Willard | Mr. Lager | 2 | 1 |
| David Dunard | Priest | Guard, Leader, Security Guard | 1 | 3 |
| Don Amendolia | Johnny Dugan, Mr. Barsotti | Dennis | 3 | 1 |
| Bill Applebaum | Martin Meegle | D'Giff | 1 | 1 |
| Bobbi Jo Lathan | Ginger Lee | Patti | 1 | 1 |
| Bruce Jarchow | Marcus | Doctor, Mooney | 1 | 2 |
| Carol Ann Susi | Mara Bernstein | Carrie | 1 | 1 |
| Charles Levin | Mark Colson | Mohel | 1 | 1 |
| David Graf | Hondo Jenkins | Cop #2 | 1 | 1 |
| Debi A. Monahan | Roxanne, Roxanne Reynolds, Roxy | Chelsea | 3 | 1 |
| Eric Christmas | Mr. Olmeyer, Pops Durkin | Haarwood | 2 | 1 |
| Jack McGee | Fast Eddie Creeger | Ralph | 1 | 1 |
| Janet Zarish | Joan Hobson | Rental Car Agent | 1 | 1 |
| Joseph V. Perry | Phil Kerr | Newstand Owner | 1 | 1 |
| Louis Mustillo | Monte Potter | Phil | 1 | 1 |
| Mimi Lieber | Maria | Rula | 1 | 1 |
| Nancy Lenehan | Ms. Abrams | Volunteer | 1 | 1 |
| Patrick Cronin | Mr. Carney | Farkus | 1 | 2 |
| Ralph Bruneau | Adam | Roy | 1 | 1 |
| Richard Roat | Dr. DeLeon, Dr. Zimmerman | Dr. Berg | 2 | 1 |
| Rif Hutton | Marshal | Salesman | 1 | 1 |
| Amy Hill | Namilama | Kim | 2 | 1 |
| I.M. Hobson | Chumly, Maitre d' | Businessman | 2 | 1 |
| Sandy Ward | Senior Partner | Pop Lazzari | 1 | 2 |
| Bunny Summers | Cafeteria Cashier | Rider | 1 | 1 |
| Charles Cyphers | Leo | Gardner | 1 | 1 |
| Donald Gibb | Terry Benoon | Letter S in Devils Body Painter | 1 | 1 |
| Glenn Shadix | Dermot Drake | Harold | 1 | 1 |
| Jeanette Miller | Kitten Latouche | Old Woman | 1 | 1 |
| Jed Mills | Frank | Joel | 1 | 1 |
| Joseph R. Sicari | Santino | Willie | 1 | 1 |
| Lionel Mark Smith | Steven Bostwick | Florist | 1 | 1 |
| Michael D. Roberts | Moody | Roger Ipswich | 1 | 1 |
| Roger Nolan | Mike Jr. | The Chiropractor | 1 | 1 |
| Shashawnee Hall | Mike | Usher | 1 | 1 |
| Stephen Lee | Frederick Streiko | Conrad | 1 | 1 |
| Brian Kaiser | Boring Man, Man | Postman | 2 | 1 |
| Allan Kolman | Dimitri | Cab Driver | 1 | 1 |
| Angelo Tiffe | Vic | Delivery Man | 1 | 1 |
| Basil Hoffman | Duane Sedgwick | Salesman | 1 | 1 |
| Brent Hinkley | Jeffrey Zane | Lou | 1 | 1 |
| Earl Boen | Arnold Burger | Eulogist | 1 | 1 |
| Edward Winter | Clarence Egan | Mr. Stevenson | 1 | 1 |
| Harry Hart-Browne | Lady Dan | Manager | 1 | 1 |
| Harvey Jason | Maurice | Auctioneer | 1 | 1 |
| Ken Myles | Con-Ed Worker | Mike | 1 | 1 |
| Laura Waterbury | Jan | Casting Director | 1 | 1 |
| Mark L. Taylor | Holding Cell Man In Dress | Michael | 1 | 1 |
| Philip Bruns | Mr. Hubble | Morty | 1 | 1 |
| Richard McGonagle | Andrew | Mr. Star | 1 | 1 |
| Ellen Ratner | Female Caroler | Ellen | 1 | 1 |
| Katie Layman | Victoria Fillmore | Cynthia | 1 | 1 |
| Rachel Sweet | Waitress | Shelly | 1 | 1 |
| Randy Brenner | Earl | Waiter | 1 | 1 |
| Roy Brocksmith | Dr. Wiggle | Landlord | 1 | 1 |
| Sharon Barr | Counselor | Trucker | 1 | 1 |
| Wayne Grace | Roosevelt | Ukrainian | 1 | 1 |
| Magda Harout | Sascha Minkoff | Stella | 1 | 1 |
| Michael Michaud | Delivery Man | Customer | 1 | 1 |
| Terri Hanauer | Miss Hendley | Julianna | 1 | 1 |
| Al Fann | Mr. Merrill | Judge | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.