All 68 actors in both ER and The Nanny
68 actors have appeared in both ER and The Nanny, across 477 episodes. The most-credited is Lawrence Mandley, Jackson, Maintenance Man in ER and Orderly #1, Juror #6, Policeman in The Nanny.
| Actor | In ER | In The Nanny | Eps | Eps |
|---|---|---|---|---|
| Lawrence Mandley | Jackson, Maintenance Man | Orderly #1, Juror #6, Policeman | 2 | 5 |
| Alex Nevil | Mr. Dorset | Mugger | 1 | 1 |
| Christopher Rich | Ron Perth | Kurt Jacobs | 1 | 1 |
| Cristine Rose | Mrs. Martinez | Dr. Voort | 1 | 1 |
| Diane Baker | Louise Duffy | Roberta | 1 | 1 |
| Marianne Muellerleile | Mrs. Jarnowski | Andrea's Mother | 1 | 1 |
| Nancy Lenehan | Edie Harvell | Russian Woman | 1 | 1 |
| Peter Scolari | Kyle Evans | Leslie Tilbert | 1 | 1 |
| Telma Hopkins | Carlene | Lila Baker | 1 | 1 |
| John LaMotta | Ivan Gregor | Maitre'd | 4 | 1 |
| Jamie Renee Smith | Emily Perrault | Young Fran Fine | 1 | 3 |
| Andy Dick | Tommy Brewer | Pepe / Bernie | 1 | 1 |
| Fran Montano | Johnson | Reporter | 1 | 1 |
| Jake Richardson | Ian Summerlin | Willie | 1 | 1 |
| Lisa Stanley | Christmas Caroller #1 | Reporter | 1 | 1 |
| Nancy Linari | Elizabeth Puro | Mrs Livingston | 1 | 1 |
| Philip Casnoff | Dr. Dan Litvak | Gary Isaacs | 1 | 1 |
| Steven Anderson | Dr. Davitch | Doctor | 2 | 1 |
| Wallace Shawn | Teddy Lempell | Charles Haste | 1 | 1 |
| William Bumiller | NASA lecturer | Detective Schoenfeld | 1 | 1 |
| Anna Berger | Mr. Brazil's Caregiver | Marilyn | 1 | 2 |
| Gloria Gifford | Mrs. Wyatt | District Attorney, INS Officer | 1 | 2 |
| Liz Torres | Sarah Wilson | Consuela | 2 | 1 |
| Mark Chaet | Tim | Bartender, Hotel Valet | 1 | 2 |
| Allen Bloomfield | Marty | Uncle Myron | 1 | 1 |
| Amanda Carlin | Librarian | Shop Assistant | 1 | 1 |
| George Murdock | Mr. Sidowski | Dakota Williams | 1 | 1 |
| Honey Lauren | Delores | Waitress | 1 | 1 |
| Judith Hoag | Mrs. Brenner | Kathy Marie O'Malley / Katherine Porter | 1 | 1 |
| Paolo Seganti | Adrian Sianis | Philippe | 1 | 1 |
| Thomas Dekker | 4 Year Old Boy | J.B. Bingington's Son | 1 | 1 |
| Benjamin Brown | Cop, Lab Tech | Matt Baker | 2 | 1 |
| Gabrielle Boni | TC Lucas | Erica | 2 | 1 |
| Patrick Cassidy | Dr. Ramsey | Mr. Anthony | 2 | 1 |
| Anne Betancourt | Mrs. Kearney | Doctor | 1 | 1 |
| Benjamin W. S. Lum | Judge | Ken | 1 | 1 |
| Bob Bancroft | Albert | Waiter #1 | 1 | 1 |
| Brenda Ballard | Barb Weston | Woman At The Park | 1 | 1 |
| Helen Geller | Jean, Mrs. Reynolds | Singer | 2 | 1 |
| Jessica Tuck | Dr. Hemmings | C.C.'s Replacement | 1 | 1 |
| Robert Clendenin | Anesthesiologist | The Bum | 1 | 1 |
| Sean LeSure | Strummer | Reporter | 1 | 1 |
| David Bowe | Father of Unicycle Boy | Fran's Date | 1 | 1 |
| David Gianopoulos | John Dean / Bob Halderman | Police Officer | 1 | 1 |
| Derek Webster | Officer Kenny Grant | Reporter #3 | 1 | 1 |
| J. Madison Wright | Molly Phillips | Betty Jo | 1 | 1 |
| James McDonnell | Pat Guinet | Colin | 1 | 1 |
| Lee Ryan | Ortho #2 | Patient | 1 | 1 |
| Lyle Kanouse | Mitch | Mover | 1 | 1 |
| Marji Martin | PCP Woman | Nanny Bower | 1 | 1 |
| Richard Fancy | Mr. Thomas | Chandler Evans | 1 | 1 |
| Richard Tanner | Dad | Waiter #2 | 1 | 1 |
| Stanley Kamel | Dr. Fin Loech | Condo Representative | 1 | 1 |
| Susan Krebs | Transplant Surgical Nurse | Headmistress | 1 | 1 |
| Tim Bagley | Archie Papion | Flight Attendant | 1 | 1 |
| Dona Hardy | Freda, Harriet | Sister | 2 | 1 |
| Chris Bruno | Richie | Ski Instructor | 1 | 1 |
| Danny Dayton | Art | Man at Nursing Home | 1 | 1 |
| Kenneth Danziger | Chauffeur | Andrew Lloyd Webber | 1 | 1 |
| Mary Bogue | Matronly Woman | Wife | 1 | 1 |
| Philippe Bergeron | European | Hotel Employee | 1 | 1 |
| Robert Costanzo | Pernicious Anemia Man | Juror #4 | 1 | 1 |
| Christopher Rodriguez-Marquette | Marty Dorsett | Young Maxwell Sheffield | 1 | 1 |
| Kathryn Joosten | Lois | Ward Nurse | 1 | 1 |
| Patrick Howard | Jimmy | Sydney | 1 | 1 |
| Richard Kline | Arnie Nadler | Richard Kline | 1 | 1 |
| Shari Shaw | Waitress | Delivery Nurse | 1 | 1 |
| Jane Cecil | Shirley | Juror #5 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.