All 86 actors in both 9-1-1: Lone Star and The Mentalist
86 actors have appeared in both 9-1-1: Lone Star and The Mentalist, across 223 episodes. The most-credited is Derek Webster, Charles Vega in 9-1-1: Lone Star and Marcus Whiteside in The Mentalist.
| Actor | In 9-1-1: Lone Star | In The Mentalist | Eps | Eps |
|---|---|---|---|---|
| Derek Webster | Charles Vega | Marcus Whiteside | 12 | 1 |
| Benito Martinez | Gabriel Reyes | Commander Delgado | 10 | 1 |
| Roxana Brusso | Andrea Reyes | Elena | 10 | 1 |
| Robyn Lively | Marlene Harris | Sadie Harrington | 8 | 1 |
| Jack Plotnick | Howard Dalton | Brett Partridge | 1 | 5 |
| Henry Ian Cusick | Enzo de la Costa | Tommy Volker | 2 | 3 |
| Jack Conley | Captain Jack Tatum | Chief Donner | 4 | 1 |
| Joshua Bitton | Police Officer | Rick Tork | 2 | 3 |
| Amanda Schull | Special Agent Rose Kasey | Marcy Victor | 5 | 1 |
| Tim Griffin | Bennett | Kenneth "Ken" Spackman | 1 | 2 |
| William Mapother | Bruce Ackerman | Richard Haibach | 1 | 4 |
| Eric Pierpoint | Chief Bowman | Vincent "Vint" Molinari | 3 | 1 |
| Mary Kay Place | Theresa Blake | Belinda Bittaker | 3 | 1 |
| Kyle Secor | Alden Radford | Father Peter DiBuono | 4 | 1 |
| Todd Stashwick | Dennis Raymond | Jared Renfrew | 2 | 1 |
| Brett Rice | Wayne Gettinger | Chief Burt Anson | 3 | 1 |
| Kelly Frye | Trina Mathis | Kati Bauer | 3 | 1 |
| William Allen Young | Benjamin Williams | Matt Etienne | 3 | 1 |
| Alex Fernandez | Tom Carver | Det. Brian Portis | 1 | 1 |
| Alex Quijano | Jordan | Attendant | 1 | 1 |
| Eugene Byrd | Will | Russell Bigelow | 1 | 1 |
| Josh Braaten | Andy | Deputy Todd Johnson | 1 | 1 |
| Laura Niemi | Mary-Lynne | Mandy Schultz | 1 | 1 |
| Michael Benyaer | Waleed Marwani | Dr. Joseph Gorshani | 1 | 1 |
| Angel Oquendo | Manuel | Jorge Velasquez | 3 | 1 |
| Graham Shiels | Cory Garrity | Officer Tom Rowley | 2 | 1 |
| Harry Groener | Joe | Francisco Navarro | 2 | 1 |
| Blake Gibbons | Duke | Keith Gulbrand | 1 | 1 |
| Erica Piccininni | Kim | Stacey Bonner | 1 | 1 |
| Kelly Schumann | Passenger | Estelle | 1 | 1 |
| Kerry O'Malley | Wren | Vivian Griswold | 1 | 1 |
| Rebecca Field | Joy | Lucy Joel | 1 | 1 |
| Brian Letscher | Roy Griffin | Billy Mock | 2 | 1 |
| Jesse Luken | Jake Harkes | Pete Coen | 2 | 1 |
| Amy Farrington | Chief Dottie Reynolds | Melinda Drew | 1 | 1 |
| Brendan McCarthy | Craig | Lance Gladstone | 1 | 1 |
| Dot-Marie Jones | Patty | Airport Manager | 1 | 1 |
| Mark Saul | Augie Thomas | Sergei Sokolov | 1 | 1 |
| Matt McTighe | Chuck Parkland | Lt. Lewis | 1 | 1 |
| Matthew Alan | Mr. Conrad | Kelvin Bittaker | 1 | 1 |
| Ned Vaughn | Peter Braswick | Reid Colman | 1 | 1 |
| Omar Leyva | Gustavo | Gardener | 2 | 1 |
| Robert Pine | Walter Strand | Tom Mitchell | 1 | 1 |
| Amy Motta | Sydney Strand | Missy Roberts | 3 | 1 |
| Stacy Highsmith | Liza | Receptionist | 1 | 2 |
| Cheryl Lynn Bowers | Valerie | Missy Brammer | 1 | 1 |
| Hayley Chase | Sharon | Darlene Pappas | 1 | 1 |
| Jill Basey | Myra | Susan Cofield | 1 | 1 |
| Matt Bushell | Lt. Jeff Tyler | Mike Vilanueva | 1 | 1 |
| Michael McMillian | Vic | Drew Abner | 1 | 1 |
| Michael Reilly Burke | Mayor Adam Stanton | Andrew Kellogg | 1 | 1 |
| Sean O'Bryan | Minefield Owner | Emmett Fitzgerald | 1 | 1 |
| Jay Jackson | Newscaster | News Anchor, Reporter | 1 | 2 |
| Geoffrey Rivas | Deputy Chief De Leon | Captain Bocanegra | 1 | 1 |
| James Urbaniak | Imp | Aaron Kalinoski | 1 | 1 |
| John Bishop | Clint | Joe O'Keefe | 1 | 1 |
| Kale Clauson | Shaun Westen | Young Man | 1 | 1 |
| Seana Kofoed | Margaret Gilbert | Mrs. Kent | 1 | 1 |
| Andi Carnick | Clara | Sac. PD Sergeant | 1 | 1 |
| Bryan Rasmussen | Flight Instructor | Mason Hunston | 1 | 1 |
| Christopher Darga | Vernon | Store Keeper | 1 | 1 |
| Frank Gallegos | Truck Driver | Jupiter Gallidos | 1 | 1 |
| Jeff Branson | Rod Allen | Walker Pond | 1 | 1 |
| Jeremy Guskin | Young Man | Pizza Delivery Man | 1 | 1 |
| Jonathan Chase | Tom Scanlon | Sandy Bauer | 1 | 1 |
| Karl T. Wright | Dr. Steven Evans | Attorney | 1 | 1 |
| Kyle Davis | Vincent Thompson | David Charles | 1 | 1 |
| Leonard Kelly-Young | Arthur Sullivan | Forensic Tech | 1 | 1 |
| Lily Knight | Leigh-Anne Kittner | Leslie Palmer | 1 | 1 |
| Marisa Echeverria | Molly | Lailah Bloom | 1 | 1 |
| Monica Garcia | Patricia | Guard | 1 | 1 |
| Shaan Sharma | Julian | Stewart | 1 | 1 |
| Sumalee Montano | Principal Annie Crabtree | Susan Nguyen | 1 | 1 |
| Casey Strand | Emma | Dr. Lilith Nash | 1 | 1 |
| Chris Ellis | Derek Poole | Sheriff Mullery | 1 | 1 |
| John Lee Ames | Man | Jim Matthews | 2 | 1 |
| Jorge-Luis Pallo | Armando Teban | Officer Downs | 1 | 1 |
| Michael C. Alexander | Boss | Austin Cop | 1 | 1 |
| Ben Begley | Dr. Gray | Ken Fletcher | 1 | 1 |
| Blake Shields | Chris Wolfe | Mike Milligan | 1 | 1 |
| Jennifer Christopher | Tech | Susan Herman | 1 | 1 |
| Jessie Lande | Mother | Coroner's Assistant | 1 | 1 |
| Max Decker | Morris | Scott Monroe | 1 | 1 |
| Gloria Sandoval | Lydia | Mrs. Paz | 1 | 1 |
| John Zderko | Brother Bob | Inner Circle Member | 1 | 1 |
| Brian Houtz | Hotel Manager | Man | 1 | 1 |
← 9-1-1: Lone Star × The Mentalist
Cast data from TVmaze, licensed CC BY-SA 4.0.