All 82 actors in both ER and Parks and Recreation
82 actors have appeared in both ER and Parks and Recreation, across 456 episodes. The most-credited is Jim O'Heir, McKenna in ER and Jerry Gergich in Parks and Recreation.
| Actor | In ER | In Parks and Recreation | Eps | Eps |
|---|---|---|---|---|
| Jim O'Heir | McKenna | Jerry Gergich | 1 | 29 |
| Susan Yeagley | Woman Reporter | Jessica Wicks | 1 | 10 |
| Brent Briscoe | Eli Ebee | JJ | 1 | 5 |
| Johnny Sneed | James | William Barnes | 1 | 5 |
| Glenne Headly | Dr. Abby Keaton | Julia Wyatt | 9 | 1 |
| Michael Gross | John "Jack" Carter | Michael | 6 | 1 |
| Adam Scott | David Kerstetter | Ben Wyatt | 1 | 2 |
| Jonathan Joss | Bert | Ken Hotate | 1 | 4 |
| Eric Pierpoint | Mr. Dwyer | Chief Trumple | 1 | 3 |
| Sam Carson | Donnie | Walter Fungerson | 1 | 1 |
| Bonnie Bartlett | Ruth Greene | Paula Horke | 2 | 1 |
| Tracy Howe | Gary | Officer Skorggel, Police Officer #1 | 1 | 6 |
| J.K. Simmons | Gus Loomer | Mayor Stice | 1 | 1 |
| Michael Patrick McGill | Detective Ed Bernstein, Security #1, Officer Jeffries | Sanitation Steve | 6 | 1 |
| Keegan-Michael Key | Witkowski | Joe | 1 | 4 |
| Bradley Whitford | Sean O'Brien | Councilman Pillner | 2 | 1 |
| Gary Carlos Cervantes | Cop | Manrico Della Rosa | 1 | 2 |
| Jack Carter | Kipke, Mickey Goldstein | Gus | 2 | 1 |
| Terri Hoyos | Mrs. Corvalan | Rita Ludgate | 1 | 2 |
| Annie O'Donnell | Eve | Elsa | 1 | 1 |
| Bob Bancroft | Albert | Frank Mann | 1 | 1 |
| Jonathan Banks | Robert Truman | Steve Wyatt | 1 | 1 |
| Hamilton Mitchell | Guy from Chairs | Bill Haggerty | 1 | 2 |
| Duane R. Shepard, Sr. | Janitor | Emcee | 1 | 3 |
| Brady Smith | Rod | Grant Larson | 1 | 2 |
| Bruce Jarchow | Dr. Hammond | Frank Schnable | 1 | 1 |
| Judith Moreland | Nurse Terry | Evelyn Roushland | 1 | 1 |
| Ron Perkins | Mr. Elmore | George | 1 | 1 |
| Steve Tom | MacPherson | Principal Russell | 1 | 1 |
| Stewart Skelton | John Taylor | Phil | 1 | 2 |
| Yolanda Snowball | Neighbor | Crying Woman | 1 | 1 |
| Debra Mooney | Leila Morgan, Barbara Feingold | Rosie Demarco | 3 | 1 |
| Andie Bolt | Hana | Kate Gompert | 1 | 1 |
| Barry Sigismondi | Hamer | Fire Chief | 1 | 1 |
| Chris Tallman | Burt Mulligan | Wendell Adams | 1 | 1 |
| Federico Dordei | Aldo | Elvis | 1 | 1 |
| Frank Noon | Birch | Business Man | 1 | 1 |
| Jack Wallace | Mr. Reynolds | Clarence | 1 | 1 |
| Jim Jansen | Neonatologist | Stuart | 1 | 1 |
| Roger Eschbacher | Richard Tuggle | Manager | 1 | 1 |
| Cletus Young | Elderly Patient | Salvatore | 1 | 2 |
| Jeris Lee Poindexter | Nate, Rafe | George | 2 | 1 |
| Brenda Ballard | Barb Weston | Rose | 1 | 1 |
| Bruno Alexander | Berman | Bob Manager | 1 | 1 |
| Hal Havins | Jacobi | Paul | 1 | 1 |
| Jay Burns | Arthur | Lance | 1 | 1 |
| Judith Drake | Greta | Connie Cabbage | 1 | 1 |
| Breon Gorman | Mrs. Arrida | Penny | 1 | 1 |
| Harvey J. Alperin | Dr. Saunders | Dennis Cooper | 1 | 1 |
| Paul Raci | Mr. Spencer | Eugene | 1 | 1 |
| Windell D. Middlebrooks | Arnie | Brian | 1 | 1 |
| Carlos Carrasco | Dominican Uncle | Antonio | 1 | 1 |
| Jon Paul Burkhart | Fred | Pantomime Horse | 1 | 1 |
| Lyle Kanouse | Mitch | Joe Campopiano | 1 | 1 |
| Stephanie Erb | Mrs. Kinney | Beth | 1 | 1 |
| Tahmus Rounds | Colby | Zookeeper | 1 | 1 |
| William Charlton | Man | Carter Veustingham | 1 | 1 |
| August Emerson | Jett | Gunch Merkwell | 1 | 1 |
| Carole Gutierrez | Landlady | Judy Zappossoppazzappossoppaz | 1 | 1 |
| Claudia Michelle Wallace | Parking Attendant | Complaining Woman | 1 | 1 |
| Dennis Howard | Dr. Steinman | Irving | 1 | 1 |
| Roderick McCarthy | Officer Owens | Roger | 1 | 1 |
| Vanessa Vander Pluym | Vanessa | Stacy | 1 | 1 |
| David Gerard Robinson | Echo Tech | Pimp | 1 | 1 |
| Rod Britt | Mr. Helpful | George | 1 | 1 |
| Andrea Hutchman | Cousin Kelly | Lisa | 1 | 1 |
| Carol Avery | Betty | Abby Fenr | 1 | 1 |
| Marcus Folmar | Foreman | Marcus | 1 | 1 |
| Randy Kovitz | Dr. Black | Terrence | 1 | 1 |
| Gary Kraus | CJ | Gene Strackwell | 1 | 1 |
| Kathleen M. Darcy | Judy | Evelyn Pikitis | 1 | 1 |
| Pat Crawford Brown | Mrs. Votey | Grandma | 1 | 1 |
| Louisa Abernathy | Mrs. Law, Mrs. Lyons | Grace Callahan | 2 | 1 |
| Andy Anderson | Firefighter | Josh | 1 | 1 |
| Jeffrey Hutchinson | Richard Weingarten | Tim Jemmersting | 1 | 1 |
| Tonya Cornelisse | Emily | Juliet | 1 | 1 |
| David Weisenberg | Hanukkah Harry | Speedo Man | 1 | 1 |
| Emily Adams | Brenda Walton | Janice | 1 | 1 |
| Anne Johnson | Elderly Patient | Old Lady 1 | 1 | 1 |
| Jonathan Palmer | Dr. Blevins | Dan | 1 | 1 |
| Alanna Boatright | Mrs. Dunn | Michelle | 1 | 1 |
| Greta Sesheta | Mrs. Bassett | Reverend Althea Nike | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.