All 125 actors in both Law & Order: LA and The Mentalist
125 actors have appeared in both Law & Order: LA and The Mentalist, across 173 episodes. The most-credited is Tamlyn Tomita, Medical Examiner Miwako Nishizawa in Law & Order: LA and Lauri Medina in The Mentalist.
| Actor | In Law & Order: LA | In The Mentalist | Eps | Eps |
|---|---|---|---|---|
| Tamlyn Tomita | Medical Examiner Miwako Nishizawa | Lauri Medina | 10 | 1 |
| Reed Diamond | Franklin Citron | Raymond "Ray" Haffner | 1 | 5 |
| Currie Graham | Defense Attorney Max Hearn | Walter Mashburn | 2 | 2 |
| Catherine Dent | Defense Attorney | Susan Darcy | 1 | 5 |
| Joel Brooks | Manny | Don Hendricks | 1 | 2 |
| Frederick Koehler | SID Tech Gilbert | Tommy Olds | 1 | 1 |
| Michael O'Neill | Trudy's Attorney | Sheriff Nelson | 1 | 1 |
| Patrick Fischler | Defense Attorney Josh Solomon | Gary Beinhart | 1 | 1 |
| Bradley Whitford | Attorney Miklin | Timothy "Tim" Carter | 1 | 3 |
| Conor O'Farrell | Defense Attorney Lane Garfield | Det. Reece | 2 | 1 |
| David Meunier | Charles Roker | Yegor Golenka | 1 | 1 |
| Dean Norris | Bob Kentner | Sgt. Don Henderson | 1 | 1 |
| Don Stark | Mayor Jack Velman | Armon Gagnon | 1 | 1 |
| John de Lancie | Judge Avery Staynor | Edward Feinberg | 1 | 1 |
| K Callan | Louise Hammond | Annabelle Draber | 1 | 1 |
| Kathleen Rose Perkins | Amy Powell | Willa Brock | 1 | 1 |
| Kenneth Mitchell | Terry Walker | Tom Wilcox | 1 | 1 |
| Lisa Kaminir | Deputy D.A. Karen Paley | Linda Berry | 1 | 1 |
| Shannon McClung | SID Ryan Meacham | Agent Collins | 1 | 4 |
| Christopher Cousins | Nelson's Lawyer | Jason Lennon | 1 | 2 |
| Titus Welliver | Attorney Kennedy | Michael Ridley | 1 | 2 |
| Chris Coy | Dave Harlin | Foley | 1 | 1 |
| Jim Beaver | Frank Loomis | Cobb Holwell | 1 | 1 |
| Jon Jon Briones | Brant Ross | Mr. Lam | 1 | 1 |
| Jose Pablo Cantillo | Caesar Vargas | Angel | 1 | 1 |
| Kerry O'Malley | Alice Darnell | Vivian Griswold | 1 | 1 |
| Marco Sanchez | Felipe Pena | Frank Schiappa | 1 | 1 |
| Marlene Forte | Inez Gomez | Isabella Ortega | 1 | 1 |
| Matt Malloy | Attorney Limpett | Scott Price | 1 | 1 |
| Melinda Page Hamilton | Attorney | Katie | 1 | 1 |
| Michael Mosley | Robert Forrester | Sheriff Ted Hardy | 1 | 1 |
| Rob Benedict | Adam Yarborough | Paul Friedman | 1 | 1 |
| Scott Lawrence | Judge | De Shaun Braemer | 1 | 1 |
| Tom Virtue | Rogan Malone | George Palmer | 1 | 1 |
| Bellamy Young | Monica Jarrow | Melanie Ayers | 1 | 1 |
| Bob McCracken | Bob Reedy | Randal Parker | 1 | 1 |
| Charles Malik Whitfield | Al Hayes | Cole Ruger | 1 | 1 |
| Gareth Williams | Jim Bikel | DEA Supervising Agent Maloney | 1 | 1 |
| Harry Groener | Attorney Spicer | Francisco Navarro | 1 | 1 |
| Heather Mazur | Dr. Phoebe Coburn | Colette Santori | 1 | 1 |
| James Morrison | Gray Campbell | Warner Vander Hoek | 1 | 1 |
| John Kapelos | Mark Buckley | Hank Draber | 1 | 1 |
| Kate McNeil | Patricia Nelson | Katherine Blakely | 1 | 1 |
| Matthew Alan | Billy Russ | Kelvin Bittaker | 1 | 1 |
| Raphael Sbarge | Dennis Ackroyd | Hollis Dunninger | 1 | 1 |
| Rick Hoffman | Attorney Miller | Christopher Lynch | 1 | 1 |
| Robin Weigert | Larry's Sister | Eliza Green | 1 | 1 |
| Tim Guinee | Colonel Richards | Tag Randolph | 1 | 1 |
| Tony Pasqualini | Judge Rudolph Patino | Alan Saltonstall | 2 | 1 |
| Alla Korot | Anna Ackroyd | Jemma Prentiss | 1 | 1 |
| Amy Hill | Judge Taryn Tanabe-Ford | Nurse Viola Hearn | 1 | 1 |
| Erin Cahill | Annette Kay | Donna Hines | 1 | 1 |
| Jesse Luken | Carlton Campbell | Pete Coen | 1 | 1 |
| Julian Acosta | Gang Unit Detective Jorge Rivas | Det. Steve Preciado | 1 | 1 |
| Laura Niemi | Madeline Maynard | Mandy Schultz | 1 | 1 |
| Nick Gracer | Eznik Abajian | Georgi | 1 | 1 |
| Rocky McMurray | Burt Russell | Highway Patrolman | 1 | 1 |
| Roxana Brusso | Ava Ruiz | Elena | 1 | 1 |
| Steven Culp | Ben Corrigan | Morgan Tolliver | 1 | 1 |
| Milissa Sears | Abby Swift | Karen Lisbon | 1 | 2 |
| Andres Perez-Molina | Freddy Ramirez | Nick Martinez | 1 | 2 |
| Angela Bullock | Judge Ellen Fabricant | Jury Forewoman | 2 | 1 |
| Bonnie Root | Maura Dillon | Tanya Derask | 1 | 1 |
| Fernanda Andrade | Lucia | Sofia Chavez | 1 | 1 |
| Frank Clem | Mr. Wilson | Andy | 1 | 1 |
| Freda Foh Shen | Forrester's Lawyer | Korean Store Owner | 1 | 1 |
| Gene Farber | Paul Mironov | Dan Hollenbeck | 1 | 1 |
| Griffin Matthews | Alexander Emery | Rafe | 1 | 1 |
| Keith Pillow | Judge James Deegan | Forensic Pathologist | 1 | 1 |
| Kimleigh Smith | Sara Mitchell | Mindy Fernandez | 1 | 1 |
| Larry Clarke | Don Wheeler | Robert "Bob" Ackerman | 1 | 1 |
| Lawrence Pressman | Judge Justin Conway | Chancellor Stern | 1 | 1 |
| Nicki Micheaux | Vanessa Hayes | Det. Miller | 1 | 1 |
| Peter MacKenzie | Attorney Simms | Holman Perry | 1 | 1 |
| Rich Hutchman | Phil John | Rafe Valiquette | 1 | 1 |
| Wiley Pickett | Fireman #1 | Colonel Aaron Raymond | 1 | 1 |
| Andi Carnick | Mary Garrett | Sac. PD Sergeant | 1 | 1 |
| Andrew Rothenberg | Stanley Vaughn | Jack Hellion | 1 | 1 |
| Chris Ellis | D.A. Walter Exley | Sheriff Mullery | 1 | 1 |
| Daniel Hugh Kelly | Judge Royce | Philip Carmichael | 1 | 1 |
| K.T. Thangavelu | Judge Mary Gupta | Doctor | 1 | 1 |
| Rubén Garfias | Armando Vela | Mendoza | 1 | 1 |
| Anne Gee Byrd | Sandra Fuller | Neighbor Lady | 1 | 1 |
| Christine Dunford | Attorney Finley | Mrs. Bonner | 1 | 1 |
| Dennis Cockrum | Steve Morris | Cellmate | 1 | 1 |
| J.R. Cacia | Steve Holt | Marcus Goodwin | 1 | 1 |
| Josh Clark | SIS Commander | Artie Beck | 1 | 1 |
| Randa Walker | Behrens | Wilma | 1 | 1 |
| Robert Cicchini | Restaurant Owner | Nick Monaco | 1 | 1 |
| Atticus Todd | Joey Fatu | Jon Jon | 1 | 1 |
| Blake Shields | Blake Humphry | Mike Milligan | 1 | 1 |
| Colby French | Doug | Jason Kern | 1 | 1 |
| Derek Ray | Del Broadleaf | Billy Racine | 1 | 1 |
| Henri Lubatti | Doctor | Roger | 1 | 1 |
| Jeris Lee Poindexter | Homeless Man | Manager | 1 | 1 |
| John Kelly | Joe Silman | Defense Attorney | 1 | 1 |
| John Prosky | Dr. Gouldin | Dr. Evan Quick | 1 | 1 |
| Melissa Marsala | Deena Knight | Lila Barca | 1 | 1 |
| Myles Cranford | Freddy Roga | Janitor | 1 | 1 |
| Ronnie Gene Blevins | Cal Gerrity | Elwood Spiller | 1 | 1 |
| Alice Rietveld | Brittany Rust | Ilsa | 1 | 1 |
| Bobby Nish | SID Tech Takahashi | KS | 1 | 1 |
| Garret Davis | Bailiff | Marty | 1 | 1 |
| Leonard Kelly-Young | Sergeant Martel | Forensic Tech | 1 | 1 |
| Mandy McMillian | Linda Manning | Jenny | 1 | 1 |
| Mark Craig | S.B. Sheriff's Deputy #1 | Cop | 1 | 1 |
| Scott Klace | Fire Chief Gable | Mike Spruell | 1 | 1 |
| Geoffrey Rivas | Mark Robles | Captain Bocanegra | 1 | 1 |
| Jim Jansen | Cameron Reardon | Pastor Farley | 1 | 1 |
| Michael Cory Davis | Surfer | Benjamin Bennett | 1 | 1 |
| Yves Bright | Trevor Knight | Euro Man Juror | 1 | 1 |
| Ajgie Kirkland | Inventory Manager Nelson | Jonas Diop | 1 | 1 |
| Amelia Jackson-Gray | Vicki DeMille | Novella | 1 | 1 |
| Angel Oquendo | Eddie Ramos | Jorge Velasquez | 1 | 1 |
| M.J. Karmi | Elizabeth Gradin | Ellen Preston | 1 | 1 |
| Margot Rose | Warden Linda Jordan | Belinda Sandborne | 1 | 1 |
| Michael A. DiBacco | Officer Jackson | Cop | 1 | 1 |
| Omar Leyva | Waiter | Gardener | 1 | 1 |
| Porter Kelly | Coroner's Tech | Chuck's Sister | 1 | 1 |
| Cindy Chiu | Coed on Phone | Candice | 1 | 1 |
| Gregory Marcel | Producer | Lester Bradovich | 1 | 1 |
| Patrick Robert Smith | Burly Suit | Police Officer | 1 | 1 |
| Adam Christy | David Holloway | Brave Student | 1 | 1 |
| Charles Carpenter | Guard #1 | Deputy | 1 | 1 |
| Joe Gerety | Security Guard | Officer Hopkins | 1 | 1 |
← Law & Order: LA × The Mentalist
Cast data from TVmaze, licensed CC BY-SA 4.0.