All 172 actors in both NCIS and Without a Trace
172 actors have appeared in both NCIS and Without a Trace, across 668 episodes. The most-credited is Margo Harshman, Delilah Fielding in NCIS and Harley Palmer in Without a Trace.
| Actor | In NCIS | In Without a Trace | Eps | Eps |
|---|---|---|---|---|
| Margo Harshman | Delilah Fielding | Harley Palmer | 21 | 1 |
| Liza Lapira | NCIS Special Agent Michelle Lee | Layla | 12 | 1 |
| Susanna Thompson | Army Lt. Col. Hollis Mann | Cynthia Neuwirth | 8 | 1 |
| Seamus Dever | NCIS Deputy Director Gabriel LaRoche, Graham Thomas | Ronald Phelps | 7 | 1 |
| Brigid Brannagh | Senator Constance Miller, Catherine Reynolds | Stephanie Boothe | 3 | 1 |
| Jack Conley | Metro Detective Danny Sportelli | Mike Carter | 3 | 1 |
| John Finn | Marine Commandant Charles T. Ellison | Abner Harrington | 3 | 1 |
| Megan Gallagher | Under Secretary of the Navy Jennifer Leo | Mrs. Freedman | 3 | 1 |
| Michael O'Neill | Former NCIS Special Agent Riley McCallister | Thomas Shannon | 3 | 1 |
| Stephanie Venditto | Dr. Jane Leisten | Dr. Lisa Harris | 1 | 3 |
| T.J. Thyne | Fletcher Voss, Carl | Duncan | 3 | 1 |
| Brett Cullen | Navy Capt. Todd Gelfand | Greg Pritchard | 2 | 1 |
| Robert Pine | Congressman Theodore Randolph, Golfer Ben | Roger Toland | 2 | 1 |
| Tamara Taylor | NCIS Special Agent Cassie Yates | Tracy McAllister | 2 | 1 |
| Alex Veadov | International Mercenary Sergei Mishnev | Goran Davits | 3 | 1 |
| Alexandra Krosney | Nadia Harcourt | Young Lianna Sardo | 1 | 1 |
| Bruce Davison | Lester Burm | Paul Cartwright | 1 | 1 |
| Conor O'Farrell | William Danforth | Graham Spaulding | 1 | 3 |
| Elizabeth Morehead | Medical Corpsman | Emily's Sister | 1 | 1 |
| Gregory Itzin | FBI Director, Spencer Downing | Sydney's Co-worker | 3 | 1 |
| James Eckhouse | Fred Cabrisio | Charles Huffman | 1 | 1 |
| Jayne Brook | Lyndi Crawshaw | Anne Atkins | 1 | 1 |
| Kelly Overton | Metro Detective Megan Hanley | Audrey Rose-Beckworth | 1 | 1 |
| Lisa Kaminir | Dr. Romero | School Psychologist | 1 | 1 |
| Marshall Allman | Donnie James Bailey | Mark | 1 | 1 |
| Michelle Wolff | Marine Srgt. Maria Sanchez | NYPD Officer | 1 | 1 |
| Mike Starr | Monroe Cooper | Gil | 1 | 1 |
| Raphael Sbarge | Rupert Kritzer | Leo Cota | 1 | 1 |
| Rick Hoffman | Kelvin Ridgeway | Gary Moscowitz | 1 | 1 |
| Sterling K. Brown | Elijah Banner | Thomas Biggs | 1 | 1 |
| Susan Misner | Leah Mayne | Jessica "Jesse" Prince | 1 | 1 |
| Tim DeKay | Senator Patrick Kiley | Jim Cooper | 1 | 1 |
| Alex Fernandez | Joseph Flores | Rafael "Rafi" Alvarez | 2 | 1 |
| Amanda Fuller | Jennifer Shields | Jessica Raab | 1 | 1 |
| Ashley Jones | Nancy Douglas | Trista Bowden | 1 | 1 |
| Barbara Tarbuck | Grandma | Barry's Mother-in-law | 1 | 2 |
| Benita Krista Nall | Amanda Wright | Rina Sanderson | 1 | 1 |
| Brian Hallisay | David Crocker | Alex Stark | 1 | 1 |
| Brooks Almy | Mrs. McDonald | Mrs. Barker | 1 | 1 |
| David Barrera | Charlie Milla | Jorge Rodriguez | 1 | 1 |
| David Burke | George Ingram | Attorney Deans | 1 | 1 |
| David Eigenberg | Ted Bankston | Teddy Cota | 1 | 1 |
| Emily Rose | Anna Jenlowe | Anya Simonson | 1 | 1 |
| Frankie Jay Allison | Vince Pierman | Ron Moody | 1 | 1 |
| Jake Thomas | Alec Dell, Petty Officer Derek Bailey | Eric Miller | 2 | 1 |
| Jeffrey Pierce | Marine Sgt. Michael McMannis | Paul Dobson | 1 | 1 |
| John Getz | Walter Kane | Mr. Garrett | 1 | 1 |
| John Rubinstein | Bob | Dr. Feldman | 1 | 1 |
| Julie Pearl | Cindy Anderson | Teacher | 1 | 1 |
| Kate McNeil | Commander Green | Maryann Costello | 1 | 1 |
| Lauren Stamile | Metro P.D. Detective Michelle Lane | Jessica | 1 | 1 |
| Michael Gaston | Maj. Dougherty | George Stanley | 1 | 1 |
| Sam Anderson | Walter Carmichael | Congressman Whitehurst | 1 | 1 |
| Spencer Garrett | Commander Spenser | Spaulding's Defense Attorney | 1 | 1 |
| Stacy Edwards | Commander Janice Byers | Emily Muller | 1 | 1 |
| Vik Sahay | Ajay Khan | Movie Driver | 2 | 1 |
| Betsy Brandt | P.O. Barbara Swain | Libby Coulter | 1 | 2 |
| Clare Carey | Ann Gibbs | Maureen Grady | 2 | 1 |
| Fay Masterson | Angela Simms, Paige Hebner | Melinda Guthrie | 2 | 1 |
| Michael Monks | Edgar, Matt Lane | Jeff Murphy | 2 | 1 |
| Robert Catrini | General Floyd Brancato, Jake Ford | Victor Cartwright | 2 | 1 |
| Alicia Lagano | Joann Allman | Michelle Holmes | 1 | 1 |
| Amy Sloan | P.O. Cynthia Cluxton | Kristin Walters | 1 | 1 |
| Annie Corley | Deputy Secretary of State Elliot | Nancy | 1 | 1 |
| Daniel Zacapa | Detective Martin Alonzo | Mr. Arintero | 1 | 1 |
| Danielle Bisutti | Secret Service Special Agent Ashley Winter | Teri Long | 1 | 1 |
| Dendrie Taylor | Janet LaCombe | Teresa Powers | 1 | 1 |
| Frank John Hughes | Enis Watley | Special Agent Jason Farrell | 1 | 1 |
| Heather Stephens | Lorraine | Lindsay Randall | 1 | 1 |
| James Martin Kelly | Mookie Perkins | Tom Garagus | 1 | 1 |
| Kathleen Garrett | Judge Mary Branigan | Mrs. Deaver | 1 | 1 |
| Kathrine Herzer | Small Girl | 5 Year-Old Jesse Hyatt | 1 | 1 |
| Laz Alonso | S Sgt. Washington | Dwayne Mitchell | 1 | 1 |
| Mackenzie Astin | Michael Rose | Charles Beckworth | 1 | 1 |
| Margaret Easley | Sara Nelson | Sonya Trammel | 1 | 1 |
| Michael McGrady | Walter Dunn | Bill Hyatt | 1 | 1 |
| Patrick Fabian | Ray Vincent | TBA | 1 | 1 |
| Paul Schulze | Marine Major Ken Meyers | Bruce Corcoran | 1 | 1 |
| Rick Ravanello | David Harris | Brad Dunsmore | 1 | 1 |
| Robert Curtis Brown | Gary Tolin | Barry Mitchum | 1 | 1 |
| Ryan Cutrona | Ray Beringer | Detective | 1 | 1 |
| Stephen Snedden | Jim Murphy | Brian Daugherty | 1 | 1 |
| Steve Eastin | Frank Smith | Lt. Col. Bull Carver | 1 | 1 |
| Tara Buck | P.O. Tara Marshall | Julie | 1 | 1 |
| Taylor Nichols | Hank Galvaston | Tom Wilkins | 1 | 1 |
| Tommy Hinkley | Deer Hunter | Hendricks | 1 | 1 |
| Wayne Lopez | Prison Sergeant Desmond Walters | Officer Backer | 1 | 1 |
| Benjamin Brown | Marine Capt. Arvidas | Howard Schmidt | 1 | 2 |
| Bruce Nozick | Harvey Grossman, Lacy | Adam Barnes | 2 | 1 |
| Channon Roe | Sergeant Gordon Lambro | Drew Anderson | 1 | 1 |
| Charlie Bodin | Keith Messier | Young Whitehurst | 1 | 1 |
| Christina Chang | NCIS Special Agent Valeri Page | Ms. Rossi | 1 | 1 |
| David Henrie | Willy Shields | Gabe Freedman | 1 | 1 |
| Erich Anderson | Jack Canton | Patrick Kent | 1 | 1 |
| Francis Capra | Eddie Castillo | Tito Cruz | 1 | 1 |
| Jeremy Ray Valdez | Alfonso Vega | Teo Rodriguez | 1 | 1 |
| John Livingston | Will Pritchard | Alex | 1 | 1 |
| Jonathan Goldstein | Glenn Block | Bartender | 1 | 1 |
| Kirk Baltz | Bob Sweeney | Scott | 1 | 1 |
| Matthew Rauch | Man | Dr. Klein | 1 | 1 |
| Megan Ward | Laura Rowens | Hillary Sterling | 1 | 1 |
| Natalija Nogulich | Judge Maddox | Rosalind Kandell | 1 | 1 |
| Ravil Isyanov | Nikolai Puchenko | TBA | 1 | 1 |
| Rebecca Lowman | Navy Lieutenant Lisa Mason | Dr. Raker | 1 | 1 |
| Robert Cicchini | Agent Daniel Snyder | TBA | 2 | 1 |
| Robin Pearson Rose | Lorrain Thorson | Lorraine Prince | 1 | 1 |
| Spencer Locke | Amber Banks | Brandee Case | 1 | 1 |
| Lawrence Pressman | Dr. Russell Pike, Secret Service Director | Mr. Beckworth | 2 | 1 |
| Alyson Reed | Monica Keogh | Miriam Kazdin | 1 | 1 |
| Christine Dunford | Jeri Fleckman | Lily Garrett | 1 | 1 |
| Frank Crim | Resident Manager | Arcade Manager | 1 | 1 |
| Glenn Taranto | Eddie Kowolski | Marconi | 1 | 1 |
| Gretchen Egolf | Det. Andrea Sparr | Vanessa Thompson | 1 | 1 |
| Inger Tudor | Doctor Sandra Holdren | Frances Kessler | 1 | 1 |
| Jamie Elman | Realtor | Alex Durphy | 1 | 1 |
| Jeremy Garrett | Marine Capt. Patrick Barnett | Luke Horton | 1 | 1 |
| John Thaddeus | Lane Danielson | Ken Hammond | 1 | 1 |
| Matt Winston | Rick Carvell | Steven Pine | 1 | 1 |
| Melody Butiu | Patricia Richert | Rosa | 1 | 1 |
| Michelle Krusiec | Maya | Call Girl | 1 | 1 |
| Myndy Crist | Jennifer Vickers | Sarah Sellars | 1 | 1 |
| Saba Homayoon | Faatin Amal | Assistant | 1 | 1 |
| Scott Paulin | Navy Capt. Kevin Dorn | Lawrence Metcalf | 1 | 1 |
| Sean Marquette | Petty Officer Third Class Evan Lowry | Nicholas | 1 | 1 |
| Tom Gallop | Victor Sterling | Derek Trainor | 1 | 1 |
| Andi Chapman | Congresswoman Bernice Donaldson | Sex Addict Meeting Counsellor | 1 | 1 |
| Blake Bashoff | Josh Cooper | Patrick McCullough | 1 | 1 |
| Brian David Jones | Uniformed Guard | Runner | 1 | 1 |
| Cheryl White | Rebecca Biddle | Fran Barnes | 1 | 1 |
| Dariush Kashani | Ezmaray Daoub | Dr. Anwar Samir | 1 | 1 |
| David Raibon | Survivalist Trainee #2 | Lincoln | 1 | 1 |
| Ivar Brogger | Simon Katz | Dr. Bedford | 1 | 1 |
| Jesse Head | Lyle Chamber | Luke Grady | 1 | 1 |
| Joel Polis | Ronald Ostrowski | Joel Landers | 1 | 1 |
| John Hartmann | DOD IG Inspector Richard Sullivan | Husband | 1 | 1 |
| Loren Lester | Dr. Edgar Cromwell | Mr. Roscoe | 1 | 1 |
| Pat Asanti | Ruben Williams | Harry | 1 | 1 |
| Roshawn Franklin | Crew Chief Rogers | Evan Young | 1 | 1 |
| Scott Alan Smith | Det. Mauceri | Walter Miller | 1 | 1 |
| Sherman Augustus | Marine Cpt. Daniel Lemay | Pete McCann | 1 | 1 |
| Tom Kemp | Assistant Secretary of ICE Len Gregory | TBA | 1 | 1 |
| Michelle Anne Johnson | DOD Counterintelligence Supervisor Emma Fisher | Fran | 1 | 2 |
| Amad Jackson | Phil Proderman | Sgt. Lewis | 1 | 1 |
| Bernardo de Paula | Alfredo Montez | Lars | 1 | 1 |
| Brad Grunberg | Big Ed | Port Authority Worker | 1 | 1 |
| Dempsey Pappion | Basketball Player | William Hope | 1 | 1 |
| Eric Matheny | Former NCIS Agent Kip Klugman | Dr. Remi Polk | 1 | 1 |
| Hilary Angelo | P.O. Jessica Smith | TBA | 1 | 1 |
| Jacqueline Hahn | Kathy Tolin | Spaudling's Ex-Wife | 1 | 1 |
| Jason Christopher | Motorcycle Rider | Ralph | 1 | 1 |
| Jimmy Palumbo | Stage manager | Frank Castallo | 1 | 1 |
| John Eddins | Steve | Paramedic | 1 | 1 |
| Michael Esparza | Marine Lance Corporal Jose Silva | Wally | 1 | 1 |
| Michael Holden | Dr. Wayne Dobson | Mr. Levine | 1 | 1 |
| Michael Patrick McGill | Joey Kelly | Manager | 1 | 1 |
| Scott Mosenson | Harry Day | Jim Thatcher | 1 | 1 |
| Vito D'Ambrosio | Jonny Zucado | Brandini | 1 | 1 |
| Ion Overman | Jane Thomas | Alice Booker / Denise Chandler | 1 | 1 |
| Jeff Austin | Colonel Mike Granger | Gene Clarkson | 1 | 1 |
| John Vickery | Interpol Inspector Hugh Benson | TBA | 1 | 1 |
| Jon Curry | Deputy Tyler Barrett | Ellis | 1 | 1 |
| Mailon Rivera | Navy Commander Scott Bitterman | Blue Panda / Mr. Jackson | 1 | 1 |
| Phil Abrams | Hotel Manager | Mr. Carr | 1 | 1 |
| Todd Kimsey | Police Capt. Grant | Special Agent Beckman | 1 | 1 |
| H. Richard Greene | Thomas Victor | Dunlop | 1 | 1 |
| Matt Kaminsky | Henry Spivey | Josh Goldin | 1 | 1 |
| Rob James | Guard | Randall Corey | 1 | 1 |
| Daniella Kuhn | Saleswomen | Elissa | 1 | 1 |
| Jack Guzman | Wade | Luka Velez | 1 | 1 |
| Adam Lieberman | U.S. Customs Officer Cruz | Dr. Postema | 1 | 1 |
| Cody Estes | Kevin Curtin | Shawn Wilson | 1 | 1 |
| Danielle Rayne | Marine Colonel Leah Siffler | Mrs. Hopkins | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.