All 74 actors in both Boy Meets World and ER
74 actors have appeared in both Boy Meets World and ER, across 489 episodes. The most-credited is Troy Evans, Ranger Mark, Trainer in Boy Meets World and Frank Martin in ER.
| Actor | In Boy Meets World | In ER | Eps | Eps |
|---|---|---|---|---|
| Troy Evans | Ranger Mark, Trainer | Frank Martin | 2 | 129 |
| Bonnie Bartlett | Dean Lila Bolander | Ruth Greene | 5 | 2 |
| Bob Larkin | Janitor Bud | Junior Neurologist | 4 | 1 |
| Connie Sawyer | Foofie | Kathy Brennan, Second Old Lady | 2 | 2 |
| Mark Harelik | Jedediah Lawrence | James | 3 | 1 |
| McNally Sagal | Doctor, Dr. Taylor, Trisha Stone | Madeline | 3 | 1 |
| Phil Leeds | Phil, Milton | Husband | 3 | 1 |
| Shane West | Nick | Dr. Ray Barnett | 1 | 3 |
| George Wyner | Frank | Rabbi | 1 | 2 |
| Jim Jansen | Dr. Sorrell | Neonatologist | 2 | 1 |
| Marisol Nichols | Kelly | Angie | 2 | 1 |
| Maury Sterling | Eddie | Dr. Nelson | 1 | 5 |
| Charles Noland | Garrett | E. Ray Bozman | 1 | 12 |
| Adam Scott | Griff Hawkins, Senior | David Kerstetter | 4 | 1 |
| Anne Haney | Mrs. Nelson | Mrs. Packer | 1 | 1 |
| Brian Turk | Isaac | Michaels | 1 | 1 |
| Dan Lauria | Judge Lamb | Rick Simpson | 1 | 1 |
| David Packer | Jonathan | Mr. Ledbetter | 1 | 1 |
| E.J. De La Pena | Herman Stecchino | Kirby | 3 | 1 |
| Jesse D. Goins | Mr. Cup | Mr. Paige | 1 | 1 |
| Len Lesser | Arnie Heck | Woody Ebbots | 1 | 1 |
| Peggy Miley | Nana Boo Boo | Bird Lady | 1 | 1 |
| Tom Gallop | Simon | Dr. Roger Julian | 1 | 3 |
| Mena Suvari | Hilary, Laura | Laura-Lee Armitage | 2 | 1 |
| Patrick Cranshaw | Custodian | Man with walker, Mr. Gilman | 1 | 2 |
| Tom Bosley | Tom Bosley | Walter Nikolaides | 1 | 2 |
| Christine Healy | Jane | Administrator Harriet Spooner | 1 | 3 |
| Shareen Mitchell | Virna Hunter | Linda Evans | 3 | 1 |
| Brandon Maggart | Pat | Stan Calaus | 2 | 1 |
| Charles C. Stevenson Jr. | Minister | Capt. Eddie | 1 | 1 |
| Cynthia Mace | Evelyn | Dr. Beth Mahoney | 1 | 1 |
| Jarrett Lennon | Howie | Billy | 1 | 1 |
| Justin Cooper | Ryan | Kid | 1 | 1 |
| Madison Eginton | Young Rachel | Hannah O'Brien | 1 | 1 |
| Maggie Lawson | Debbie | Shannon Mitchell | 1 | 1 |
| Mark Tymchyshyn | Guidance Counselor | Mr. Pruitt | 1 | 1 |
| Michael Dempsey | The Cop | Mr. Beckwith | 1 | 1 |
| Michael Fairman | Dr. Markman | Mort Harris | 1 | 1 |
| Michelle Clunie | Kelly | Gretchen | 1 | 1 |
| Shay Astar | Mindy Barnett, Paula Kelly | Amy Thompson | 2 | 1 |
| Tom La Grua | Elf | Mr. Leonelli | 1 | 1 |
| Danielle Harris | Theresa 'T.K.' Keiner | Laura Quentin | 1 | 2 |
| Josh Keaton | Boy #2, Roy | Greg | 2 | 1 |
| Marcus Toji | Einstein Kid, Kid #1 | Binkey | 2 | 1 |
| Bill Stevenson | Loan Officer | Clerk | 1 | 1 |
| Christopher Wiehl | Dexter | Mr. Lattimer | 1 | 1 |
| Frank Novak | Desk Sergeant | Ted | 1 | 1 |
| Jeanine Jackson | Instructor | Elise Stevens | 1 | 1 |
| Juliette Jeffers | Karen Chase | Elena Flemming | 1 | 1 |
| Kevin Brief | Mailman | Walter Brosnich | 1 | 1 |
| Nancy Lenehan | Susan Kalliback | Edie Harvell | 1 | 1 |
| Paul Kent | Tourist #1 | Morgan | 1 | 1 |
| Robert Kerbeck | Professor | J.B. Shanley | 1 | 1 |
| Thomas Wilson Brown | Announcer Ed | Perk | 1 | 1 |
| Ned Bellamy | Luther | Detective | 1 | 2 |
| Donna Ponterotto | Nurse | Pearl | 1 | 1 |
| Ivory Ocean | Police Officer | Mr. Preston | 1 | 1 |
| Joey Gaynor | Crew Guy | Burly Patient | 1 | 1 |
| Matt Landers | Graham | Mr. Travels | 1 | 1 |
| Patrick Renna | Kyle | Howie McMurtry | 1 | 1 |
| Tico Wells | D.J. | Dr. Jennings | 1 | 1 |
| Amy Leland | Devon Collins | Sara | 1 | 1 |
| Art LaFleur | Bill | Miles Kearney | 1 | 1 |
| Gwen McGee | Nurse | O.B. Chong | 1 | 1 |
| Kimberly Scott | Sonja | Sandy's Mother | 1 | 1 |
| Lorna Scott | Nurse | Stan's Wife | 1 | 1 |
| Michael Hanniff | Tommy | Kirk | 1 | 1 |
| Natanya Ross | Ingrid Iverson | Mandy | 1 | 1 |
| Steven Gilborn | Arthur Kandib, PhD | Dr. Randall | 1 | 1 |
| Kevin West | Mr. Stimpleman, Wally | Robert Sanders | 2 | 1 |
| Christopher Darga | Counterman | Wilson | 1 | 1 |
| Yolanda Gaskins | Sharon | TV News Reporter | 1 | 1 |
| Kay E. Kuter | Herbert | Mr. Seaton | 1 | 1 |
| Lenny Wolpe | Car Dealer | Dr. George Hudson | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.