All 61 actors in both Mad About You and NCIS
61 actors have appeared in both Mad About You and NCIS, across 684 episodes. The most-credited is Larry Miller, Lou Bonaparte in Mad About You and Ed Slater in NCIS.
| Actor | In Mad About You | In NCIS | Eps | Eps |
|---|---|---|---|---|
| Larry Miller | Lou Bonaparte | Ed Slater | 5 | 2 |
| Melinda McGraw | Cheryl Gendelman | Diane Sterling | 1 | 6 |
| Gates McFadden | Allison Rourke | Constance Belmont | 4 | 1 |
| Bradley White | Doug Berkus | Bart Powell | 7 | 1 |
| Anne-Marie Johnson | Pre-School Principal | Marine Col. Stacey Radcliffe, Senator Selena Grayson | 1 | 2 |
| Christian Clemenson | Jared | Perry Sterling | 2 | 1 |
| Alan Ruck | Lance Brockwell | Ward Davis | 4 | 1 |
| Adilah Barnes | Registrar #2 | Miss Nellie | 1 | 1 |
| Charles Shaughnessy | Michael | Balthazar Kilmeany | 1 | 1 |
| Dean Cameron | Irwin | Building Owner | 3 | 1 |
| Erick Avari | Dr. Arzupian | Col. Dan McClafferty | 1 | 1 |
| Iqbal Theba | The Cabbie | Ramesh Sengupta | 1 | 1 |
| Patrick Bristow | Troy, The Clerk | Channing Elroy | 5 | 1 |
| Judyann Elder | Nurse Lily | Marny Mathers | 4 | 1 |
| Jean St. James | The Mother | Marilyn Davis | 1 | 2 |
| José Zúñiga | Arturo | Navy Capt. Dr. Adrian De La Casa | 2 | 1 |
| Asif Ali | Rishi | Phil | 3 | 1 |
| Tyrees Allen | Bobby, Party Guest | NSO Deputy Director Dean Welsh | 3 | 1 |
| Alexandra Bokyun Chun | Gift Wrapping Clerk | Phyllis Wu | 1 | 1 |
| Greg Collins | Sergio | Police Officer Metro PD | 1 | 1 |
| Kenneth Tigar | Norman Lark | Diggar Aldridge | 1 | 1 |
| Keone Young | Al | Lee Sung | 1 | 1 |
| Reggie Lee | Gardner's Assistant | Jonathan Chow | 1 | 1 |
| Robert Costanzo | The Door Guy | Jimmy Napalitano | 1 | 1 |
| Beau Billingslea | Ralph Martoni, The Security Chief | Denny "Pop" Rydell | 2 | 1 |
| Rick Overton | Earl, The Shepherd | Elmer Barlow | 2 | 1 |
| Brian McNamara | Doug | Noah Sykes | 1 | 1 |
| Edie McClurg | Rosie | Ruth Potts | 1 | 1 |
| Jane Carr | Hillary | Dr. Erica Heller | 1 | 1 |
| Jesse D. Goins | DiChristophoro' Lawyer | Jeffrey Wilson | 1 | 1 |
| Judith Moreland | Mrs. Peterson | Carrie Lewis | 1 | 1 |
| Kari Coleman | Molly Norman | Maggie Scott | 1 | 1 |
| Perry Anzilotti | Roy Osterback | Ted Rogers | 1 | 1 |
| Christopher Darga | Akiba the Cameraman | Skip Harris | 1 | 1 |
| David Carpenter | Man on Street | Henry Hoss | 1 | 1 |
| Eric Allan Kramer | Skippy, Orderly #2 | Phillip Ekkerly | 1 | 1 |
| Gregg Daniel | The Neighbor | Parking Enforcement Officer Riggs | 1 | 1 |
| JoNell Kennedy | Paul's Flight Attendant | Navy Commander Lisa Cleveland | 1 | 1 |
| Maurice Irvin | Fantasy Coffee Husband | Navy Commander Daly | 1 | 1 |
| Robert Curtis Brown | The Lawyer | Gary Tolin | 1 | 1 |
| Scott Atkinson | Doug the Handyman | Lt. Cmdr. Kyle Ross | 1 | 1 |
| Sofia Milos | Sarah | Bethany Lipton | 1 | 1 |
| Dale Godboldo | Film Student | Cy | 1 | 1 |
| Daniel Hagen | Skip | Calvin Hopper | 1 | 1 |
| David Batiste | Daniel | Max Phillips | 1 | 1 |
| David Dean Bottrell | Animal Handler | Assistant Director of Operations Donald Linder | 1 | 1 |
| Don McManus | Chris Tofsky | Mark Stafford | 1 | 1 |
| Steven Anderson | Ricky Wrongstag | Professor Daniel Redner | 1 | 1 |
| Aaron Lustig | The Neighbor | Doctor Victor Kalsa | 1 | 1 |
| Harry Hutchinson | Officer #2 | Alexandria Cop | 1 | 1 |
| Mailon Rivera | Ray | Navy Commander Scott Bitterman | 1 | 1 |
| Marcelo Tubert | The Subway Passenger | Nazar Boulos | 1 | 1 |
| Mary Gallagher | Lobbyist #1 | Betty Baxter | 1 | 1 |
| Ping Wu | Kim | Peter Liu | 1 | 1 |
| Tom Gallop | The Ad Exec | Victor Sterling | 1 | 1 |
| Armando Molina | The Delivery Guy | Miguel Fernandez | 1 | 1 |
| Matt Kaminsky | Steve the Waiter | Henry Spivey | 1 | 1 |
| Pamela Dunlap | Louise | Mom | 1 | 1 |
| Tom Ayers | Guy With Cast | Bobby Dale Douglas | 1 | 1 |
| Tarina Pouncy | Justine | Virginia State Police Cpt. Anne Crenshaw | 1 | 1 |
| Jim Lau | Ng Lieu Cho | Old Vendor | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.