All 190 actors in both 9-1-1: Lone Star and NCIS
190 actors have appeared in both 9-1-1: Lone Star and NCIS, across 580 episodes. The most-credited is Derek Webster, Charles Vega in 9-1-1: Lone Star and Major Joe Sacco, Marine Capt. Stengel in NCIS.
| Actor | In 9-1-1: Lone Star | In NCIS | Eps | Eps |
|---|---|---|---|---|
| Derek Webster | Charles Vega | Major Joe Sacco, Marine Capt. Stengel | 12 | 2 |
| Benito Martinez | Gabriel Reyes | Detective Conklin | 10 | 1 |
| Roxana Brusso | Andrea Reyes | Noemi Cruz | 10 | 1 |
| Bo Kane | Captain Andrews | North Carolina State Trooper William Forman | 6 | 1 |
| Jack Conley | Captain Jack Tatum | Metro Detective Danny Sportelli | 4 | 3 |
| Amanda Schull | Special Agent Rose Kasey | Kay Barlow | 5 | 1 |
| Brigid Brannagh | Abe's Mother | Senator Constance Miller, Catherine Reynolds | 1 | 3 |
| Nina Concepción | Bree | NCIS Dispatcher Gladys Molina | 18 | 1 |
| Ginifer King | Dr. Barbara Jacobs | Lexi Davis | 6 | 1 |
| Brian Letscher | Roy Griffin | Sam Bennett | 2 | 1 |
| Cameron Cowperthwaite | Grant Harlan | Young Marine Corporal Thomas Fletcher | 2 | 1 |
| Dominic Burgess | Dave Sheffield | Leonard | 2 | 1 |
| Linara Washington | Beverly Gordon | Lara Morgan | 1 | 2 |
| Robert Pine | Walter Strand | Congressman Theodore Randolph, Golfer Ben | 1 | 2 |
| Amanda Payton | Asha Fulton | Misty Boxlarter | 4 | 1 |
| Andy Favreau | Pearce Risher | CIA Officer Jim Hillcot, Navy Lieutenant Eric Kutzler | 3 | 2 |
| Julie Benz | Sadie Becker | Mrs. Denise Johnson | 4 | 1 |
| Carla Gallo | Vicki Nadler | Melissa Wheeler Fox | 1 | 1 |
| Carson Fagerbakke | Andrea | Tanya Ellsworth | 1 | 1 |
| Mark Berry | Captain Broussard | Joe | 1 | 1 |
| Evan Arnold | Elliot Pasquale | Gareth Bainbridge | 4 | 1 |
| John Posey | Cole Robertson | Lance Simmons | 4 | 1 |
| Armando Acevedo | Javier Galvez | Rene "Renny" Romero | 2 | 1 |
| Diandra Lyle | Cassandra | Alexandria P.D. Karen Stradivarius | 1 | 2 |
| Lauren Bowles | Joanne Polson | Mary Wiles, Nance Freeman | 1 | 2 |
| Lourdes Benedicto | Curandera | Rebecca Chidis | 2 | 1 |
| Sumalee Montano | Principal Annie Crabtree | NCIS Special Agent Nicole Taggart | 1 | 2 |
| Barbara Eve Harris | Denice Williams | FAA Director Stacy Bergin | 3 | 1 |
| Brennan Keel Cook | Andy Pearson | Travis Williams | 3 | 1 |
| Brett Rice | Wayne Gettinger | Captain RJ Hammond | 3 | 1 |
| Kelly Frye | Trina Mathis | Navy Lieutenant Kara Gifford | 3 | 1 |
| William Allen Young | Benjamin Williams | FBI Director Barry Hutchins, U.S. Secretary of Defense Moses McClaine | 3 | 2 |
| Scott Peat | Turner | Mitchell Grafton | 5 | 1 |
| Alex Quijano | Jordan | Blye Head of Security Blake Huxley | 1 | 1 |
| Anthony Starke | Allen | Derrick Choyce | 1 | 1 |
| Brian Thomas Smith | Andrew Reynolds | Larry | 1 | 1 |
| Ellie Araiza | Clara | Sheila Mooney | 1 | 1 |
| Erin Cummings | Teri | Marine Major Ellen Wallace | 1 | 1 |
| Grant Harvey | Hank | Ian Maddux | 1 | 1 |
| Jason Wiles | Ron Bettencourt | Paul LeMere | 1 | 2 |
| Joel Damany Steingold | Franklin | Officer Frank Mandel | 1 | 1 |
| Joseph Julian Soria | Marcos | Victor "Popeye" Carmado | 1 | 1 |
| Juan Javier Cardenas | Ray | Carlos Savina | 1 | 1 |
| Michael Benyaer | Waleed Marwani | Osman Zoranj | 1 | 1 |
| Presilah Nunez | Taylor | Navy Lieutenant Commander Cheryl Stanley | 1 | 1 |
| Ray Stoney | Sgt. Marcus Stokes | Ben Golden | 2 | 1 |
| Stevie Lynn Jones | Joanne Pearson | Shayna Reynolds | 2 | 1 |
| Tim Griffin | Bennett | Marine Sgt. Malcolm Porter | 1 | 1 |
| Travis Hammer | Vince | Faux County Deputy Randall Sledge | 1 | 1 |
| Adam Baldwin | Detective Brian McGregor | Cdr. Rainer | 2 | 1 |
| Bart Johnson | Stanley | Marine Lieutenant Dean Hudson | 2 | 1 |
| Graham Shiels | Cory Garrity | Martin Jansen | 2 | 1 |
| Randy Vasquez | Special Agent Eli Barrosa | ATF Special Agent Philip Caffey, NCIS Agent Roger Voight | 1 | 2 |
| Alex Carter | Captain Braxton | Knox Elicott | 1 | 1 |
| Angela E. Gibbs | Sylvia | Eden Penzance | 1 | 1 |
| Anne Bedian | Nasreen Marwani | Hamida | 1 | 1 |
| Ben Begley | Dr. Gray | Jimmy Lancaster | 1 | 1 |
| Cleo King | Cynthia Strickland | Della Robinson | 1 | 1 |
| Elizabeth Ho | Therapist | NCIS Analyst Emma Park | 1 | 1 |
| Hina Khan | Isla | Rachel Lakhani | 1 | 1 |
| John Bishop | Clint | Army Surplus Store Owner | 1 | 1 |
| Larry Joe Campbell | Al | Congressman James Wallace | 1 | 1 |
| Link Ruiz | Jimmy | Hugo Grava | 1 | 1 |
| Michael Kostroff | Dr. Patt | Felix Lassiter | 1 | 1 |
| Michael Reilly Burke | Mayor Adam Stanton | Frank Connell | 1 | 1 |
| Oliver Muirhead | Dr. Keith Chalmers | Jay Danorth | 1 | 1 |
| Shireen Crutchfield | Attractive Woman | Jane Woods | 1 | 1 |
| Stephen Friedrich | Drew | Sid | 1 | 1 |
| Tara Buck | Amy | P.O. Tara Marshall | 1 | 1 |
| J. Teddy Garces | Detective Brice | Omar Lewis | 2 | 1 |
| Jesse Luken | Jake Harkes | Corpsman | 2 | 1 |
| Kim Matula | Lily | Agent Rose | 2 | 1 |
| Rhomeyn Johnson | Security Officer Maxwell | Trucker Al | 2 | 1 |
| Allan McLeod | Otto Reed | Ted | 1 | 1 |
| Anjali Bhimani | Hannah | Samantha Petrie | 1 | 1 |
| Anthony L. Fernandez | Burke | Luis Carter | 1 | 1 |
| Arnell Powell | James Cuddy | Abraham Moussalah | 1 | 1 |
| Billy Lush | Rick | Fisher Hyland | 1 | 1 |
| Bob Stephenson | Chief Jenkins | Kevin Lane | 1 | 1 |
| Christopher Darga | Vernon | Skip Harris | 1 | 1 |
| Cory Blevins | Kevin | Father | 1 | 1 |
| Danny Max | Reporter | News Reporter | 1 | 2 |
| Edward Gelhaus | Ronald the Survival Guy | NCIS REACT Special Agent Edward Madden | 1 | 1 |
| Elizabeth Liang | Jacquie | NCIS REACT Agent Jones | 1 | 2 |
| Frederick Lawrence | Foreman | Officer Mackey | 2 | 1 |
| Gary Hudson | Randy | Detective John Fioscher | 1 | 1 |
| James Urbaniak | Imp | Dr. Rod Daniels | 1 | 1 |
| Jeffrey Doornbos | Patrick | Marshall Tomko | 2 | 1 |
| Jonathan Chase | Tom Scanlon | Navy Commander Marshall May | 1 | 1 |
| Mark L. Taylor | Injured Man | Dr. Harvey Kimball | 1 | 1 |
| Matt Bushell | Lt. Jeff Tyler | Marine Lt. Rob King | 1 | 1 |
| Matthew Alan | Mr. Conrad | Navy Lieutenant Paul Booth | 1 | 1 |
| Nancy Linehan Charles | Mrs. Engel | Ruthann Harrison | 1 | 1 |
| Ned Vaughn | Peter Braswick | Navy Capt. Dean Pullman | 1 | 1 |
| Sam Daly | Sgt. Patrick Hargeaves | Virginia State Police Officer Dale Moseby | 1 | 1 |
| Alex Fernandez | Tom Carver | Joseph Flores | 1 | 2 |
| Ashley Dulaney | Colleen Parkland | Rebecca | 2 | 1 |
| Ian Stanley | Captain Harthan | Robert Whitlock | 2 | 1 |
| Alison Haislip | Brandy | Navy Lt. Commander Hannah Banks | 1 | 1 |
| Benjamin Stockham | Wesley | Henry Marshall | 1 | 1 |
| Betsy Baker | Edith Sullivan | Ramona | 1 | 1 |
| Briana Lane | Pastor Nicole | Diane Boyle | 1 | 1 |
| Catherine Kresge | Alissa | Marine Lance Corporal Stella Brooks | 1 | 1 |
| Charlie Morgan Patton | Becca | Paige | 1 | 1 |
| Frank Gallegos | Truck Driver | Pete | 1 | 1 |
| Hayley Chase | Sharon | Kimberly | 1 | 1 |
| Jared Gertner | Dan | Royman Beesbo | 1 | 1 |
| Jeff Branson | Rod Allen | Navy Commander Chad Hendricks | 1 | 1 |
| John Kellar | Knight | William / Fred Sammons | 1 | 1 |
| Jorge-Luis Pallo | Armando Teban | Lt. Matthew Sanchez | 1 | 1 |
| Keon Alexander | Fauza | CIA Special Agent Nazy Rickman | 1 | 1 |
| Lindsay Pulsipher | Kristen Smart | Tina Ellis | 1 | 1 |
| Luke Jones | Tripper | Manny Barnes | 1 | 1 |
| Matt McTighe | Chuck Parkland | Allan Hayes | 1 | 1 |
| Maureen Driscoll | Amethyst | Mrs. Darlene Applebaum | 1 | 1 |
| Michael Masini | Sheriff Trumbull | Axel McKenzie III | 1 | 1 |
| Michael McMillian | Vic | David Kemmons | 1 | 1 |
| Peter James Smith | Art | Benjamin Harmey | 1 | 1 |
| Philip Shahbaz | Iman Obeidi | Doctor Hamza Bashar | 1 | 1 |
| Sean O'Bryan | Minefield Owner | David Shields | 1 | 1 |
| Serenity Grace Russell | Rory | Riley | 1 | 1 |
| Stacie Greenwell | Ellen | Hartford County Sheriff Marge Fields | 1 | 1 |
| Stephen O'Mahoney | Silver Fox | CEO Paul Newhope | 1 | 1 |
| Yolanda Snowball | Janice | Meeting Secretary | 1 | 1 |
| Adam O'Byrne | Darryl Keyes | Mike Norman | 1 | 1 |
| Andi Carnick | Clara | Penny Block | 1 | 1 |
| Curt Mega | Zippy / Ted | Michael Bell | 1 | 1 |
| Erica Piccininni | Kim | Navy Lieutenant Clea Thorson | 1 | 1 |
| Geoffrey Rivas | Deputy Chief De Leon | Ricardo Guzman | 1 | 1 |
| Jeremy Guskin | Young Man | Roland Kesta | 1 | 1 |
| John Hartmann | Dr. Nelson | DOD IG Inspector Richard Sullivan | 1 | 1 |
| June Carryl | Dr. Mary Roberts | Julia Marino | 1 | 1 |
| Matthew Downs | Sergeant Davies | Bill Norian | 1 | 1 |
| Nick Massouh | Hudson | Navy Chief Petty Officer Refet Ramadani | 1 | 1 |
| Roberta Hanlen | Marilyn Crump | Joann Dearing | 1 | 1 |
| Sadie Calvano | Kara | Rebecca Mason | 1 | 1 |
| Seana Kofoed | Margaret Gilbert | CEO Virginia Wilson | 1 | 1 |
| Shaan Sharma | Julian | Jordanian G.I.D. Officer Rani Alfarah | 1 | 1 |
| Walter Perez | Ben | Army First Lieutenant Michael Waters | 1 | 1 |
| Brittany Freeth | Luisa Reyes | Pilot #2 | 2 | 1 |
| Andrea Grano | Building Manager | Navy Commander Eleadora Rey | 1 | 1 |
| China Anne McClain | Lisa | Delilah "Lily" Vance | 1 | 1 |
| Chris Ellis | Derek Poole | Gunnery Sgt. John Deluca | 1 | 1 |
| Eliza Shin | Jenna | Myrna | 1 | 1 |
| Justin Alston | Gordon Howard | NCIS Special Agent Holgate | 1 | 1 |
| Karl T. Wright | Dr. Steven Evans | John Hicks | 1 | 1 |
| Leonard Kelly-Young | Arthur Sullivan | George Keogh | 1 | 1 |
| Marcus Terrell Smith | Jerry | Wedding DJ / NCIS Agent | 1 | 1 |
| Robert Craighead | Happy Stan | DEA Agent Simon Lewis | 1 | 1 |
| Scott Deckert | Andrew Smart | Bobby | 1 | 1 |
| Tajh Bellow | Andrew | Navy Petty Officer Second Class Samuel Miles | 1 | 1 |
| Zeke Alton | Journalist | Detective | 1 | 1 |
| Roland Ruiz | Seth | Kenny | 2 | 1 |
| Aaron Hendry | Delivery Guy | Bob Mugford | 1 | 1 |
| Alexander Harris | Lawyer | Museum Docent Sal | 1 | 1 |
| Bart McCarthy | Merle | Retired Marine Master Sergeant George Hawkins | 1 | 1 |
| Blake Shields | Chris Wolfe | Potential Recruit | 1 | 1 |
| Courtney Hawkins | Female Driver | Sketchy Gal | 1 | 1 |
| Dean Chekvala | Jasper | Frank Holtz | 1 | 1 |
| Jeff Elam | Exam Administrator | Lead Detective | 1 | 1 |
| Lana McKissack | Abigail | Edie Samples | 1 | 1 |
| Morgan Peter Brown | Vern | Paul Morton / The Poet | 1 | 1 |
| Rob Mainord | Mr. Potts | Myron Holt | 1 | 1 |
| Ryan Masson | Mark Poling | Arthur Vernon | 1 | 1 |
| Tessa Munro | Dr. Gray | Travis's Mom | 1 | 1 |
| Timothy Davis-Reed | Minister | Edison Rawls | 1 | 1 |
| Tyler Tomás Perez | Brett | Navy P.O. First Class Sam Vega | 1 | 1 |
| Bahni Turpin | Judy | Camille West | 1 | 1 |
| Brendan McCarthy | Craig | Owen Dixon | 1 | 1 |
| Chris Marroy | Phillips | Pilot | 1 | 1 |
| Greg Benson | Dr. Marks | Phillip Legrand | 1 | 1 |
| Juan Alfonso | Hector | Ramon Moncada | 1 | 1 |
| Salome Azizi | Dr. Kelsey Akopian | ZNN Reporter Einat Hadar | 1 | 1 |
| Swati Kapila | Neha | CEO Tamara Hamilton | 1 | 1 |
| Tarina Pouncy | Intake Nurse | Virginia State Police Cpt. Anne Crenshaw | 1 | 1 |
| Tripp Pickell | Helicopter Pilot | Petty Officer Pete Bidwell | 1 | 1 |
| Wes McGee | Freddie | Navy Petty Officer First Class Andrew Wells | 1 | 1 |
| Dawnmarie Ferrara | Sheriff Martinez | Trucker #1 | 1 | 1 |
| Jodie Bentley | Officer Garrick | Lawyer | 1 | 1 |
| Joe Chambrello | Wine Guy | Kidnapper | 1 | 1 |
| Jon Beavers | Eric | Sam Butler | 1 | 1 |
| Joseph Whipp | Bill | Old Man | 1 | 1 |
| Milo Cragnotti | Little Boy | Young Parker | 1 | 1 |
| Andrew Hwang | Medical Examiner | Nervous Asian Man | 1 | 1 |
| Bo Youngblood | Bartender | Janis | 1 | 1 |
| Harvey J. Alperin | Rabbi Finkel | Henry Mantell | 1 | 1 |
| Troy Vincent | Hammond | Lawyer | 1 | 1 |
| Corie Vickers | Helene | NCIS Special Agent Lynn Davis | 1 | 1 |
| Kyle Davis | Vincent Thompson | John ‘Diesel’ Stevens | 1 | 1 |
| Thomas McNamara | Jason | Pilot #1 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.