All 238 actors in both ER and Without a Trace
238 actors have appeared in both ER and Without a Trace, across 491 episodes. The most-credited is Troy Evans, Frank Martin in ER and Plesac in Without a Trace.
| Actor | In ER | In Without a Trace | Eps | Eps |
|---|---|---|---|---|
| Troy Evans | Frank Martin | Plesac | 129 | 1 |
| Emily Rose | Dr. Tracy Martin | Anya Simonson | 11 | 1 |
| Kat Dennings | Zoe Butler | Jennifer Norton | 5 | 1 |
| Eion Bailey | Med Student Jake Scanlon | Christopher Mayes | 10 | 1 |
| Daniel Dae Kim | Ken Sung | Mark Hiroshi | 4 | 1 |
| Sam Anderson | Dr. Jack Kayson | Congressman Whitehurst | 19 | 1 |
| Stephanie Venditto | Diana Rushing | Dr. Lisa Harris | 1 | 3 |
| Mark Pellegrino | Nathan Conley | Sadik Marku | 1 | 2 |
| Maury Sterling | Dr. Nelson | Glenn Remick | 5 | 1 |
| Megan Gallagher | Kathy Snyder | Mrs. Freedman | 2 | 1 |
| Ray Baker | Durant | Victor Fitzgerald | 1 | 2 |
| Conor O'Farrell | Richard Abbott | Graham Spaulding | 2 | 3 |
| Allison Mackie | Clair Wilkes | Kate Metcalf | 1 | 1 |
| David Hewlett | Mr. Schudy | Fred Watkins | 1 | 1 |
| Freda Foh Shen | Audiologist | Irene Taft | 3 | 1 |
| Hayley McFarland | Candice | Addy Gilroy | 1 | 1 |
| J.K. Simmons | Gus Loomer | Mark Wilson | 1 | 1 |
| Michael Cudlitz | Lang | Mark Casey | 1 | 1 |
| Michael O'Neill | Col. Ken Kilner | Thomas Shannon | 1 | 1 |
| Michelle Wolff | Firefighter Rillo | NYPD Officer | 1 | 1 |
| Nicole Bilderback | Claire | Wendy Kim | 1 | 1 |
| Robin Weigert | Nicole | Adina Paphos | 1 | 1 |
| Romy Rosemont | Joanne Bairos | Karen Miller | 1 | 1 |
| Sterling K. Brown | Bob Harris | Thomas Biggs | 1 | 1 |
| Veronica Cartwright | Norma Houston | Mrs. Beckworth, Susan | 2 | 2 |
| Vyto Ruginis | Paramedic Wright | Sheriff Phil Damore | 3 | 1 |
| Mary Mara | Loretta Sweet | Mrs. Corcoran | 9 | 1 |
| Valerie Mahaffey | Joi Abbott | Bonnie Toland | 4 | 1 |
| Ernie Hudson | Colonel James Gallant | Manny Aybar | 2 | 1 |
| Tom Irwin | Gabriel Milner | Barry Mashburn | 1 | 2 |
| Andy Powers | Dr. Howard Ritzke | Geoff Clay | 4 | 1 |
| Barbara Tarbuck | Alice Presley | Barry's Mother-in-law | 1 | 2 |
| Camille Saviola | Margaret | Camilla Russo | 1 | 1 |
| Colton James | Mickey | Leo | 2 | 1 |
| David Barrera | Felix Hernandez | Jorge Rodriguez | 1 | 1 |
| Frankie Jay Allison | Frankie | Ron Moody | 1 | 1 |
| Grace Phillips | Mrs. Brower | Lynn Gerard | 1 | 1 |
| Guillermo Diaz | Jorge | Carlos Gonzalez | 1 | 1 |
| Haley Ramm | Tasha | Jen Long | 1 | 1 |
| Harris Laskawy | Siebert | Judge H. Adderly | 1 | 2 |
| John Rubinstein | Dr. Kenner | Dr. Feldman | 1 | 1 |
| Judith Hoag | Mrs. Brenner | Carol Miller | 1 | 1 |
| Kasha Kropinski | Mia | Lisa Potter | 1 | 1 |
| Lisa Edelstein | Aggie Orton | Dr. Lianna Sardo | 1 | 1 |
| Michael Gaston | U.S. Marshal Rick Cromley | George Stanley | 1 | 1 |
| Michael Yama | Epidemiologist | Mr. Kim | 1 | 1 |
| Rosalind Chao | Dr. Theresa Chow | Helen Collins | 1 | 1 |
| Rosemary Forsyth | Judy | Martha Scoggins, Nancy Highsmith | 1 | 2 |
| Shannon Woodward | Kelly Taggart | Vicki Johnson | 2 | 1 |
| Svetlana Efremova | Impatient Woman | Yelena Tzetcovich | 1 | 1 |
| Tom Gallop | Dr. Roger Julian | Derek Trainor | 3 | 1 |
| Michael Patrick McGill | Detective Ed Bernstein, Security #1, Officer Jeffries | Manager | 6 | 1 |
| Jeremy Ray Valdez | Roberto Rosales | Teo Rodriguez | 2 | 1 |
| Paul Adelstein | Hank Loman, Paul | Dave Lovitt | 2 | 1 |
| Alexa Nikolas | Megan Nesbitt | Emily Levine | 1 | 1 |
| Anton Yelchin | Robbie Edelstein | Johnny Atkins | 1 | 1 |
| Brigid Brannagh | Jamie Hendricks | Stephanie Boothe | 1 | 1 |
| Christine Healy | Administrator Harriet Spooner | Josh's Mother | 3 | 1 |
| Denise Dowse | Mrs. Lysell | Mrs. Ray | 1 | 1 |
| Fay Hauser | Lorraine | Donna Chin | 1 | 1 |
| Jeffrey D. Sams | Dr. Dorsey Watson | Fire Captain Scott McAllister | 1 | 1 |
| John Diehl | Johnson's Son | Doyle | 1 | 1 |
| John DiMaggio | Narcotics Cop | Reese Randall | 1 | 1 |
| Judith Scott | Mandy Smith | Gail O'Neill | 1 | 1 |
| Marin Hinkle | Kathy | ADA Angela Buckman | 1 | 1 |
| Michael McGrady | Fire Captain Davis | Bill Hyatt | 1 | 1 |
| Ryan Cutrona | Wilson | Detective | 1 | 1 |
| Thom Barry | T-Ball | Frankie | 1 | 1 |
| Joe Basile | Officer Tom Bennini | Dan | 2 | 1 |
| Juanita Jennings | ICU Doctor, Mrs. Davis | Delores Jones | 2 | 1 |
| Raphael Sbarge | Mr. Kirkendall | Leo Cota | 2 | 1 |
| Tommy Hinkley | Mr. Ellis | Hendricks | 2 | 1 |
| Andi Chapman | Joanie Albright | Sex Addict Meeting Counsellor | 2 | 1 |
| Arye Gross | Kevin | Charles Porter | 1 | 1 |
| Benjamin Brown | Cop, Lab Tech | Howard Schmidt | 2 | 2 |
| Bodhi Elfman | Nicky | Chris Roland | 1 | 1 |
| Charlotte Colavin | Sylvia | Mrs. Suarez | 1 | 1 |
| Clare Carey | Shauna | Maureen Grady | 1 | 1 |
| Colby French | Greg Becton | Lt. Cooper | 1 | 1 |
| David Denman | Jeremy Willis / "Angel" | Mike Clemens | 1 | 1 |
| David Eigenberg | Detective Trent Mallory | Teddy Cota | 1 | 1 |
| Erich Anderson | Mr. Bradley | Patrick Kent | 1 | 1 |
| James McDonnell | Pat Guinet | TBA | 1 | 1 |
| John Lafayette | Harold Anderson | Mike Ray | 1 | 1 |
| Maz Jobrani | Henry Aquino | Imam | 1 | 1 |
| Michael Muhney | Colin Prentice | Billy Molina | 1 | 1 |
| Myndy Crist | Valerie Page | Sarah Sellars | 2 | 1 |
| Ramy Zada | Vincent Greco | Construction Foreman | 1 | 1 |
| Richard Cox | Rick Mathers | Father Gavin Cavanagh | 1 | 1 |
| Sandra Purpuro | Mrs. Perrault | Emily's Hairdresser | 1 | 1 |
| Taylor Nichols | Mr. Adams | Tom Wilkins | 1 | 1 |
| Toshi Toda | Japanese Businessman 1 | Shop Keeper | 1 | 1 |
| William Sanderson | Mr. Percy | Wally Sykes | 1 | 1 |
| Elizabeth Morehead | Mrs. Simmons | Emily's Sister | 2 | 1 |
| Alexandra Krosney | Trina | Young Lianna Sardo | 1 | 1 |
| Colleen Flynn | Jodi O'Brien | Katherine Kent | 1 | 1 |
| Gregory Itzin | Burn Doctor | Sydney's Co-worker | 1 | 1 |
| James Handy | Dan Sullivan | Dr. Falk | 1 | 1 |
| Joanna Lipari | Mom | Social Worker | 1 | 1 |
| John P. Connolly | Officer Billy | Bus Supervisor | 1 | 1 |
| Jose Yenque | Wardell | Franco Reyes | 1 | 1 |
| Kate McNeil | Mrs. Pendry | Maryann Costello | 1 | 1 |
| Kathleen Garrett | Mrs. Meeker | Mrs. Deaver | 1 | 1 |
| Kyle Gibson | Danny Huggins | Chris Norton | 1 | 1 |
| Lily Knight | Mary Cochran | Alice Radowski | 1 | 1 |
| Lisa Kaminir | Jessie | School Psychologist | 1 | 1 |
| Mackenzie Phillips | Leslie Miller | Theresa Caldwell | 1 | 1 |
| Michael Monks | Mr. Vennerbeck | Jeff Murphy | 1 | 1 |
| Scott Haven | P.K. Palmer IV | Earl Ridgeway | 1 | 1 |
| Vince Grant | Jeff Woodman | Park Ranger Trey Cavanaugh | 1 | 1 |
| Jesse Head | Grinder Guy, Tommy Stevens | Luke Grady | 2 | 1 |
| Abigail Revasch | Lactation Consultant | Mrs. Heller | 1 | 1 |
| Alan Blumenfeld | Rob Savage | Dr. Kreutzer | 1 | 1 |
| Amad Jackson | Mr. Hughes | Sgt. Lewis | 1 | 1 |
| Brian David Jones | Jackson | Runner | 1 | 1 |
| Bruce Nozick | Craig Simon | Adam Barnes | 2 | 1 |
| Dwayne L. Barnes | Officer Pinter | Andre Jones | 1 | 1 |
| Elaine Kagan | Mrs. Shearer | Eve's Boss | 1 | 1 |
| Elizabeth Rice | Sara Pasbalas | Natasha Tzetcovich | 1 | 1 |
| Glenn Taranto | O'Mally, Rizzo | Marconi | 2 | 1 |
| Joan McMurtrey | Birdwatcher | Ruth Norton | 1 | 1 |
| Marcia Rodd | Melissa Harold's Mother | Sandra Pappish | 1 | 1 |
| Megan Ward | Judy Anderson | Hillary Sterling | 1 | 1 |
| Nathan Norton | David | Kevin Burke | 1 | 1 |
| Paul Carafotes | Police Officer | Kevin Yates | 1 | 1 |
| Robert Cicchini | Channel 5 Chopper Reporter | TBA | 1 | 1 |
| Robin Pearson Rose | Lois | Lorraine Prince | 1 | 1 |
| Roz Witt | Saleswoman | Ethel Robbins | 1 | 1 |
| Scott Paulin | Dr. Kirsch | Lawrence Metcalf | 1 | 1 |
| Tomas Arana | State's Attorney Rifkin | Chuck | 1 | 1 |
| William Francis McGuire | Alan's Father | Thayer Cleveland | 1 | 1 |
| Betsy Brandt | Franny Myers | Libby Coulter | 1 | 2 |
| Jack Guzman | Morgan | Luka Velez | 2 | 1 |
| Alicia Lagano | Tracy | Michelle Holmes | 1 | 1 |
| Alyson Reed | Ginny | Miriam Kazdin | 1 | 1 |
| Bonnie Burroughs | Candy | TBA | 1 | 1 |
| Brad Grunberg | Masked Man | Port Authority Worker | 1 | 1 |
| David Warshofsky | Hostage Negotiator | TBA | 1 | 1 |
| Eric Barry | Ivan | Shane Whitmore | 1 | 1 |
| Jacqueline Hahn | Dr. Bazzano | Spaudling's Ex-Wife | 1 | 1 |
| Jayne Taini | Marge Satterfield | Care Home Administrator | 1 | 1 |
| Josette DiCarlo | Mrs. D'Angelo | Victim Support Fund Representative | 1 | 1 |
| Julie Dretzin | Shelly | TBA | 1 | 1 |
| Larry Joshua | Lomas | Larry "Bear" Andrews | 1 | 1 |
| Leah Lail | Kara Nielsen | Corinne McCormick | 1 | 1 |
| Sarah Rayne | Sarah Bengossi | Jesse Hyatt | 1 | 1 |
| Scott Mosenson | Michael Gambrell | Jim Thatcher | 1 | 1 |
| Liza Lapira | Christine | Layla | 2 | 1 |
| Michelle Anne Johnson | Sarah Irving | Fran | 1 | 2 |
| Baadja-Lyne Odums | Driver | Adams | 1 | 1 |
| Bradford Tatum | Detective Reitz | Bartholomew Higins | 1 | 1 |
| Cheryl White | Meryl Sites | Fran Barnes | 1 | 1 |
| Daniel Quinn | Casey | Lance Carlson | 1 | 1 |
| Ivar Brogger | Deposition Attorney | Dr. Bedford | 1 | 1 |
| Iyari Limon | Brenda | Louisa Cruz | 1 | 1 |
| Jake Thomas | Nick Riley | Eric Miller | 1 | 1 |
| John Bellucci | Father | TBA | 1 | 1 |
| John Thaddeus | Keith Nelson | Ken Hammond | 1 | 1 |
| Sara Mornell | Robin Gambrell | Mrs. Wilson | 1 | 1 |
| Stephen Spinella | Henry Lotery | Joel Kemper | 1 | 1 |
| Steve Eastin | Lorenzo | Lt. Col. Bull Carver | 1 | 1 |
| Tim Halligan | Howard | Art Buyer Husband | 1 | 1 |
| Amanda Carlin | Librarian | Annie Waldach | 1 | 1 |
| Damara Reilly | Estelle | Diane | 1 | 1 |
| Danny Arroyo | Dr. Reid Mooney | Guillermo "Memo" Ruiz | 1 | 1 |
| Dendrie Taylor | Mrs. Knoll | Teresa Powers | 1 | 1 |
| Fred Pinkard | Mr. Stubey | Witness with Violin | 1 | 1 |
| James Martin Kelly | Mednick | Tom Garagus | 1 | 1 |
| James Sie | Student #5 | Walter | 1 | 1 |
| Joey Naber | Santa Juan | Salvatore | 1 | 1 |
| Jon Curry | Karl | Ellis | 1 | 1 |
| Lou Richards | Perkins | Arlin Tompkins | 1 | 1 |
| Mari Weiss | Vicki | Laura Randall | 1 | 1 |
| Michelle Krusiec | Tong-Ye | Call Girl | 1 | 1 |
| Robert Rigamonti | Mr. Adler | Kyle | 1 | 1 |
| Ron Dean | Uncle Joey | Willie | 1 | 1 |
| Steffani Brass | Shelly Burke | Wendy Mashburn | 1 | 1 |
| Sven Holmberg | Lars | Shem | 1 | 1 |
| Terri Hanauer | Mrs. Haggerty | Carla Horton | 1 | 1 |
| Thomas Vincent Kelly | Jeffrey Macauley | Officer Hurst | 1 | 1 |
| Angela Sargeant | Shannon | Amy | 1 | 1 |
| Brian Catalano | Officer Cash | Cop | 1 | 1 |
| Craig Watkinson | Russell | Bellman | 1 | 1 |
| Gary Carlos Cervantes | Cop | Mr. Cruz | 1 | 1 |
| Kyle McCaffrey | Jimmy Singer | Ryland | 1 | 1 |
| Linda Lawson | Aunt Eileen | Mrs. Janey | 1 | 1 |
| Louis Iacoviello | Officer Rovner | Daryl Wyeth | 2 | 1 |
| Mary Kay Wulf | Mrs. Cordova | Mrs. Posey | 1 | 1 |
| Megan Henning | Katie Milner | Allison Toland | 1 | 1 |
| Nicholas Cascone | Howard Mills | TBA | 1 | 1 |
| Sylva Kelegian | Donna | Lauren Andrews-Dardis | 1 | 1 |
| Thom Gossom, Jr. | Mr. Davis | Pharmacist | 1 | 1 |
| Alison Martin | Mrs. Kendrick | Mrs. Sawyer | 1 | 1 |
| Allan Wasserman | Mr. Goldstein | Carter Barnes | 1 | 1 |
| Art Chudabala | Greg | Dr. Komatsu | 1 | 1 |
| Ashleigh Ann Wood | Fiona | Riley Martin | 1 | 1 |
| Carl Weintraub | Melody's Boyfriend | Chris O'Neill | 1 | 1 |
| Edward Carnevale | Packie | Ray Deasey | 1 | 1 |
| Francis Guinan | Police Negotiator | Dr. Charlton Gregory | 1 | 1 |
| Hope Levy | Christmas Caroller #3 | Secretary | 1 | 1 |
| Jeff Corbett | Mike Dodds | Captain Scott Winters | 1 | 1 |
| Lamont Johnson | Shrike | Musef | 1 | 1 |
| Marisol Ramirez | Mrs. Escalante | Sylvia Marquez | 1 | 1 |
| Scott Cummins | Hank | Anonymous Man | 1 | 1 |
| Susan Krebs | Transplant Surgical Nurse | Child Psychologist | 1 | 1 |
| Adam Lieberman | Levine | Dr. Postema | 1 | 1 |
| Carlos Alvarado | Gang Member | Miguel | 1 | 1 |
| Gwen Van Dam | Etta | Emma | 1 | 1 |
| Herman Chaves | Carlos | Jose | 1 | 1 |
| Jason Matthew Smith | Ralph Binks | Colin Foley | 1 | 1 |
| Linda Kerns | Mrs. Bohlmeyer | Wilma | 1 | 1 |
| Ralph Meyering, Jr. | Detective | Manager | 1 | 1 |
| Sean-Michael Bowles | Technician | Paul Newman | 1 | 1 |
| William Christian | Hayward | Bernard Griffin | 1 | 1 |
| Amy Benedict | Mom | Mother #2 | 1 | 1 |
| Bob Bancroft | Albert | Mitchell Henderson | 1 | 1 |
| Brandy Rainey | Christy | Tasha | 1 | 1 |
| Jimmy Palumbo | Officer Berger | Frank Castallo | 1 | 1 |
| Jonny Acker | Jeremy | Ted | 1 | 1 |
| Kendra Danielle Smith | Trish | Receptionist | 1 | 1 |
| Lauren Robinson | Tina | Polly | 1 | 1 |
| Michele Harrell | Mrs. Howard's Daughter | TBA | 1 | 1 |
| Patrice Johnson | Monica Walker | Molly | 1 | 1 |
| Peter Gail | Hugh | Turner | 1 | 1 |
| Robert Dolan | Pediatrician | George Dunlop | 1 | 1 |
| Vito D'Ambrosio | Forchet | Brandini | 1 | 1 |
| William Turner | Jamal | Reggie Johnson | 1 | 1 |
| John Maynard | Flasher | Lenny | 1 | 1 |
| P.J. Marino | Officer Jaeger | Nick Jones | 1 | 1 |
| Phil Abrams | Rodney | Mr. Carr | 1 | 1 |
| Lauri Hendler | Lenore Bee | Mrs. Levine | 1 | 1 |
| Shelley Malil | Dr. Urami | Ahmed | 1 | 1 |
| Verda Bridges | May Crawford | Patty Hendricks | 1 | 1 |
| Wayne Lopez | Benitez | Officer Backer | 1 | 1 |
| Cody Estes | Rudy | Shawn Wilson | 1 | 1 |
| Craig Ricci Shaynak | Fritz | Buddy Two | 1 | 1 |
| Trisha Simmons | Maureen | Mother #1 | 1 | 1 |
| Christian Keiber | Panicali | Buddy One | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.