All 61 actors in both ER and The Wonder Years
61 actors have appeared in both ER and The Wonder Years, across 446 episodes. The most-credited is Robert Picardo, Abraham Zimble in ER and Coach Cutlip in The Wonder Years.
| Actor | In ER | In The Wonder Years | Eps | Eps |
|---|---|---|---|---|
| Robert Picardo | Abraham Zimble | Coach Cutlip | 1 | 13 |
| Raye Birk | Mr. Hartley | Mr. Diperna | 1 | 10 |
| David Schwimmer | Dr. Karubian | Michael | 1 | 4 |
| Harrison Page | Stan | Coach Baker | 4 | 1 |
| Scott Menville | Beidermeier | Wart | 1 | 4 |
| Scott Jaeck | Dr. Steven Flint | Mr. Arlo Bottner | 12 | 1 |
| David Brisbin | Dr. Alexander Babcock | Mr. Atkinson | 19 | 1 |
| Charles Tyner | Barry Connelly | Mr. Nestor | 1 | 2 |
| John C. Moskoff | Len Weston | Alvin Pfeiffer | 1 | 5 |
| Lynn Milgrim | Ms. Crandell | Mrs. Cooper | 1 | 4 |
| Paul Dooley | Henry Lewis | Pops | 4 | 1 |
| Steven Gilborn | Dr. Randall | Mr. Collins | 1 | 3 |
| Liz Torres | Sarah Wilson | Mrs. Gambino | 2 | 1 |
| Mars Callahan | Matt | Steve | 1 | 2 |
| Michael Gregory | Westbrook | Coach | 1 | 2 |
| Pat Crawford Brown | Mrs. Votey | Mrs. Ruebner | 1 | 2 |
| Cristine Rose | Mrs. Martinez | Dr. Ferleger | 1 | 1 |
| Gary Carlos Cervantes | Cop | Band Member #2 | 1 | 2 |
| Al Ruscio | Mr. Dellanova | Mr. Harris | 1 | 1 |
| Ellen Albertini Dow | Mrs. Riblet | Mrs. Tambora | 1 | 1 |
| Jason Ross-Azikiwe | Fireman #1 | Mr. Peel | 1 | 1 |
| Joseph Whipp | Alan | Mr. Quaranta | 1 | 1 |
| Madison Mason | Clive King | Foreman | 1 | 1 |
| John Pleshette | Stuart | Charlie Barrett | 1 | 2 |
| Peter Spellos | Trib Reporter | Band Member #3 | 1 | 2 |
| Richard Fancy | Mr. Thomas | Dr. Valenti | 1 | 2 |
| Angela Paton | Mrs. Ransom | Woman at City Hall | 1 | 1 |
| Bette Ford | Princess Taffeta | Aunt Muriel | 1 | 1 |
| Brandis Kemp | Temp Nurse | Sales Lady | 1 | 1 |
| Cal Gibson | Kim Tadlock | Caddy Master | 1 | 1 |
| Don Perry | Dr. Stan Breedlove | Mr. Deeks | 2 | 1 |
| Eric Lloyd | Martin Leanly | Young Kevin Arnold | 1 | 1 |
| Matthew Faison | Dr. Weinstein | City Hall Official, Salesman | 1 | 2 |
| Nancy Youngblut | Sarah Howe | Woman | 1 | 1 |
| Phyllis Flax | Regina Hunter | Teacher | 1 | 1 |
| Billy Beck | Rob Hunter | Old Paul Pfeiffer | 1 | 1 |
| Larry Bagby | Second Reporter | Senior Guy | 1 | 1 |
| Marnie Andrews | Sister | Mrs. Billings | 1 | 1 |
| Noah Blake | Sean | Frank 'The Stank' Stanavukovic | 1 | 1 |
| Renee Faia | Brianna Thomas | Peggy Kimball | 1 | 1 |
| Tom McCleister | Larry | Wally | 1 | 1 |
| Victor Raider-Wexler | Vascular Doctor | 'Pistol Pete' Pedermier | 1 | 1 |
| Miguel Pérez | Santiago Escalona | Band Leader | 1 | 2 |
| Pamela Gordon | Regina | Miss Harrelson | 2 | 1 |
| Michael Manasseri | Michael Kenny | Mark Hooper | 1 | 1 |
| Mike Hagerty | Mr. James | Clerk | 1 | 1 |
| Allen Bloomfield | Marty | Al Bloomfield | 1 | 2 |
| Bob Larkin | Junior Neurologist | Old Chuck Coleman | 1 | 1 |
| Cherie Franklin | Cashier | Marian | 1 | 1 |
| David Byrd | Howard Waller | Jeweler | 1 | 1 |
| Jack McGee | Rodney McMullen | Mr. Kaplan | 1 | 1 |
| Skip O'Brien | Larry Brody | Bus Driver | 1 | 1 |
| Travis McKenna | Mr. DeMisa | Joe the Bartender | 1 | 1 |
| Aimee Graham | Mrs. Everly | Candy Jensen | 1 | 1 |
| David Selburg | Dr. Dyer | Lou | 2 | 1 |
| Eda Reiss Merin | Mrs. Heizer | Woman | 1 | 1 |
| Lorna Scott | Stan's Wife | Mrs. Santa | 1 | 1 |
| Arye Gross | Kevin | Adult Kevin Arnold | 1 | 1 |
| Candice Azzara | Mrs. Roth | Mrs. Ermin | 1 | 1 |
| Jean Sincere | Gladys | Nurse | 1 | 1 |
| Patrick Thomas O'Brien | Carmichael | Mr. Santa | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.