All 115 actors in both 9-1-1: Lone Star and NCIS: Los Angeles
115 actors have appeared in both 9-1-1: Lone Star and NCIS: Los Angeles, across 395 episodes. The most-credited is Derek Webster, Charles Vega in 9-1-1: Lone Star and ATF Agent John Stone in NCIS: Los Angeles.
| Actor | In 9-1-1: Lone Star | In NCIS: Los Angeles | Eps | Eps |
|---|---|---|---|---|
| Derek Webster | Charles Vega | ATF Agent John Stone | 12 | 1 |
| Benito Martinez | Gabriel Reyes | Gonzalo Vargas | 10 | 1 |
| Roxana Brusso | Andrea Reyes | Navy Commander Valerie Torres | 10 | 1 |
| Aisha Hinds | Henrietta "Hen" Wilson | Chief Investigator Ava Wallace | 1 | 3 |
| Jorge-Luis Pallo | Armando Teban | Special Agent Salazar, Special Agent Bomb Tech Salazar | 1 | 3 |
| Antonio Leon | Hazmat Captain Garcia | Omar | 2 | 1 |
| Ashley Spillers | Lila Geralds | Homeland Security Specialist Sydney Jones | 3 | 3 |
| Dominic Burgess | Dave Sheffield | Herman Cooper | 2 | 1 |
| Nick Massouh | Hudson | Mazhar Tarik | 1 | 2 |
| Angel Parker | Josie | Secret Service Agent Alicia Monroe | 1 | 1 |
| Angela E. Gibbs | Sylvia | Ellen | 1 | 1 |
| Tony Curtis Blondell | AFD Proctor | Guy | 1 | 3 |
| Brett Rice | Wayne Gettinger | Anthony Trager | 3 | 1 |
| Kelly Frye | Trina Mathis | Robin Henson | 3 | 1 |
| John Posey | Cole Robertson | Army General Keys | 4 | 1 |
| Laura Niemi | Mary-Lynne | CIA Analyst Wendy Balian | 1 | 1 |
| Nancy Linehan Charles | Mrs. Engel | Jessica Haymes | 1 | 1 |
| Ray Stoney | Sgt. Marcus Stokes | Paul | 2 | 1 |
| Bart Johnson | Stanley | Marine Gunnery Sergeant Mike Johnson | 2 | 1 |
| Joshua Bitton | Police Officer | Navy Lieutenant Commander Daniel Chambers | 2 | 1 |
| Omar Leyva | Gustavo | Cashier | 2 | 1 |
| Rhomeyn Johnson | Security Officer Maxwell | Terrell | 2 | 1 |
| Alex Carter | Captain Braxton | Frank Kouris | 1 | 1 |
| Alison Haislip | Brandy | Nicole Ross | 1 | 1 |
| Anjali Bhimani | Hannah | Mira Yacoob | 1 | 1 |
| Blake Gibbons | Duke | Fallon | 1 | 1 |
| Gigi Bermingham | Margaret Mooney | Laura | 1 | 1 |
| Hina Khan | Isla | Monica Kendricks | 1 | 1 |
| Jeremy Guskin | Young Man | Peter "Rocket" Mooring | 1 | 1 |
| Jim Hanna | Bernard | Motel Owner | 1 | 1 |
| Kyle Davis | Vincent Thompson | Bobby Asher | 1 | 1 |
| Michael Kostroff | Dr. Patt | Robert Fenton | 1 | 1 |
| Michael McMillian | Vic | Donald Jenkins | 1 | 1 |
| Rebecca Field | Joy | Ginny | 1 | 1 |
| Sean O'Bryan | Minefield Owner | Gavin Teed | 1 | 1 |
| Tim Griffin | Bennett | Unit Leader | 1 | 1 |
| Travis Hammer | Vince | Perry Bellamy | 1 | 1 |
| Albert Kong | Zach | Maze Cooper | 6 | 1 |
| Brian Letscher | Roy Griffin | Marine CPL Scott Reilly | 2 | 1 |
| Caleel Harris | Damon Colfax | Cooper | 2 | 1 |
| J. Teddy Garces | Detective Brice | Guard #1 | 2 | 1 |
| Stacie Greenwell | Ellen | Sonya Morales | 1 | 2 |
| Alex Fernandez | Tom Carver | Luis Perez | 1 | 1 |
| Amy Farrington | Chief Dottie Reynolds | Genevive Parks | 1 | 1 |
| Ben Begley | Dr. Gray | Car Rental Agent | 1 | 1 |
| Dan Southworth | State Trooper | Alika Hatch | 1 | 1 |
| David Chan | Bystander | Nurse Steven Hong | 1 | 1 |
| Dean Chekvala | Jasper | Ethan Harper, Ryan Long | 1 | 2 |
| Edward Gelhaus | Ronald the Survival Guy | Beard-O / David Belle | 1 | 1 |
| Gary Perez | Lt. John Vasquez | Miquel Barbosa | 1 | 1 |
| Graham Shiels | Cory Garrity | Quinn | 2 | 1 |
| J.P. Manoux | Trevor | Bob Wright | 1 | 1 |
| Jaime Gomez | Pablo Martinez | U.S. Border Patrol Agent Jay Rivera | 1 | 1 |
| Jeff Branson | Rod Allen | FBI Agent Norman Jenkins | 1 | 1 |
| Jeffrey Doornbos | Patrick | William Baker | 2 | 1 |
| Jenson Cheng | Police Officer | Fake NCIS Special Agent Mark Chen | 1 | 1 |
| Juan Javier Cardenas | Ray | Ricardo Pena/Roman Nulishkin | 1 | 1 |
| Krizia Bajos | Lacey Ellington | Patricia Ruiz | 1 | 1 |
| Lauren Bowles | Joanne Polson | Gaia | 1 | 1 |
| Mark Saul | Augie Thomas | Ethan | 1 | 1 |
| Matt Bushell | Lt. Jeff Tyler | Jason Smith | 1 | 1 |
| Michael Bow | Probie Barrett | Sean Baker | 1 | 1 |
| Ned Vaughn | Peter Braswick | Navy Commander Rearden | 1 | 1 |
| Sumalee Montano | Principal Annie Crabtree | Yen Tran | 1 | 1 |
| Catherine Curry | Hannah Strand | Kid | 3 | 1 |
| Alexander Bedria | Anthony Marlowe | FBI Special Agent Randall Cejudo | 1 | 1 |
| Bobby Hogan | Duncan Bettencourt | Marine Private First Class James Williams | 1 | 1 |
| Brandon Keener | Caleb Wilson | Assistant U.S. Attorney Rick Sullivan | 1 | 1 |
| Jonathan Chase | Tom Scanlon | Kevin Turner | 1 | 1 |
| Jonathan R. Freeman | Ronnie | Dante | 1 | 1 |
| Ludwig Manukian | Joseph | Rashad Nader | 1 | 1 |
| Matthew Downs | Sergeant Davies | Rocky | 1 | 1 |
| Michael Reilly Burke | Mayor Adam Stanton | Malcolm Tallridge | 1 | 1 |
| Presilah Nunez | Taylor | NCIS Analyst Dana Hill | 1 | 1 |
| Robert Craighead | Happy Stan | Homeless Man | 1 | 1 |
| Tanya Clarke | Angie | Magda McEllon | 1 | 1 |
| Walter Perez | Ben | Omar Alvares | 1 | 1 |
| Ian Stanley | Captain Harthan | LAPD Officer McNeil | 2 | 1 |
| Roberto Montesinos | Francisco | Eduardo Banuelos | 2 | 1 |
| Danny Vasquez | James | Cartel Man 1 | 1 | 1 |
| Frank Gallegos | Truck Driver | Eduardo Barajas | 1 | 1 |
| John Hartmann | Dr. Nelson | Bryan Colster | 1 | 1 |
| June Carryl | Dr. Mary Roberts | Beth Kelley | 1 | 1 |
| Luke Barnett | Agent Dawson | Jake Hanson | 1 | 1 |
| Nikki McKenzie | Maggie | Dealer | 1 | 1 |
| Tessa Bartholomew | ICU Nurse | Sailor | 1 | 1 |
| Yolanda Snowball | Janice | SFPD Front Desk Cop | 1 | 1 |
| Anton Narinskiy | Firefighter Sobek | Neil Lott | 2 | 1 |
| Brittany Freeth | Luisa Reyes | Navy Air Controller | 2 | 1 |
| Christian Telesmar | Dante | Deputy U.S. Marshall | 1 | 1 |
| Curt Mega | Zippy / Ted | Reggie Tiller | 1 | 1 |
| Eddie Liu | Steve | Scott Young / Scott Yung / Caller | 1 | 1 |
| Julian Works | Marvin | James Martinez | 1 | 1 |
| Justin Alston | Gordon Howard | James "Masud" Booth | 1 | 1 |
| Linara Washington | Beverly Gordon | Nurse Constance Harper | 1 | 1 |
| Marcus Terrell Smith | Jerry | Larry | 1 | 1 |
| Max Decker | Morris | Abel | 1 | 1 |
| Rene Moran | Todd | Calvin Sims | 1 | 1 |
| David Grant Wright | Reverend Tom | Oliver Decker | 1 | 1 |
| David Haley | Greg | DOD Police Officer | 1 | 1 |
| Joe Keyes | Mechanic | Taxi Driver | 1 | 1 |
| Josh Braaten | Andy | Adam | 1 | 1 |
| Link Ruiz | Jimmy | Bag Man | 1 | 1 |
| Marcos De Silvas | Doctor Fisher | Martinez | 1 | 1 |
| Wylie Small | Rachel | Estelle Mills | 1 | 1 |
| Blair Hickey | U.S. Attorney Smith | Sheldon Rhodes | 1 | 1 |
| Gregory James Cohan | Jim Dawson | Prison Guard Alvin Bell | 1 | 1 |
| Sun Park | Instructor | Mee | 1 | 1 |
| Tony von Halle | Triage Attendant | Lincoln #1 | 1 | 1 |
| Aaron Coleman | Marshall | Ross | 1 | 1 |
| Jeff Bee | Blake | Delivery Guy | 1 | 1 |
| Tripp Pickell | Helicopter Pilot | Male Agent #1 | 1 | 1 |
| Juan Alfonso | Hector | Carlos | 1 | 1 |
| Terra Strong Lyons | Paramedic #1 | Officer Julie Thompson | 1 | 1 |
| Jack Kennedy | Animal Control Officer | Earl Mayfield | 1 | 1 |
← 9-1-1: Lone Star × NCIS: Los Angeles
Cast data from TVmaze, licensed CC BY-SA 4.0.