All 195 actors in both Monk and The Mentalist
195 actors have appeared in both Monk and The Mentalist, across 275 episodes. The most-credited is David Noroña, Lt. Plato in Monk and Osvaldo "Oscar" Ardiles in The Mentalist.
| Actor | In Monk | In The Mentalist | Eps | Eps |
|---|---|---|---|---|
| David Noroña | Lt. Plato | Osvaldo "Oscar" Ardiles | 1 | 7 |
| Malcolm McDowell | Julian Hodge | Bret Stiles | 1 | 5 |
| Reed Diamond | Agent Stone | Raymond "Ray" Haffner | 1 | 5 |
| Bradley Whitford | Dean Berry | Timothy "Tim" Carter | 1 | 3 |
| Sharon Lawrence | Linda Fusco | Melba Walker Shannon | 3 | 1 |
| Currie Graham | Harold Maloney | Walter Mashburn | 1 | 2 |
| Drew Powell | Eddie Murdoch | Reede Smith | 1 | 5 |
| Alona Tal | Molly Evans | Natalie Edreau | 1 | 1 |
| Brett Cullen | James | Dane Kurtik | 1 | 1 |
| Cameron Monaghan | Danny Cooper | Elliot | 1 | 1 |
| Eddie McClintock | Warren Kemp | Sgt. Hawkins | 1 | 1 |
| Jim Beaver | Sheriff Ronald Mathis | Cobb Holwell | 1 | 1 |
| John D'Aquino | McKiernan | Bill Herman | 1 | 1 |
| Lisa Sheridan | Lizzie Talvo | Dr. Brooke Harper | 1 | 1 |
| Patrick Fischler | Eddie | Gary Beinhart | 1 | 1 |
| Silas Weir Mitchell | Drugstore Manager | Ralph Mercer | 1 | 1 |
| Christopher Cousins | Lt. Hendrix | Jason Lennon | 1 | 2 |
| Dylan Baker | John Hannigan | Bill Peterson | 1 | 2 |
| Titus Welliver | Daniel Reese | Michael Ridley | 1 | 2 |
| Amy Aquino | Mrs. Bowen, Rhonda | Judge Patricia Davis | 2 | 2 |
| Alanna Ubach | Jennie Silverman | Dr. Gidry | 1 | 1 |
| Ashley Johnson | Susie | Clara Tennant | 1 | 1 |
| Brooke Langton | Terri | Pella Goodwin | 1 | 1 |
| Chet Grissom | Detective #1, Detective Burns, Detective Terry Chasen | Mr. Trevayne | 3 | 1 |
| Daniel Roebuck | Larry Zwibell | Det. Wade | 1 | 1 |
| Darby Stanchfield | Erin Hammond | Stevie Caid | 1 | 1 |
| Emmanuelle Vaugier | Pat | Melissa Enfield | 1 | 1 |
| Eric Stonestreet | Boom Boom | Malcolm Boatwright | 1 | 1 |
| Evan Peters | Eric Tavala | Oliver McDaniel | 1 | 1 |
| Gail O'Grady | Lovely Rita, Miranda St. Claire | Juniper Tolliver | 2 | 1 |
| Geoff Pierson | Harry Bolston | Noah Plaskett | 1 | 1 |
| Henri Lubatti | French Chef | Roger | 1 | 1 |
| Jamie McShane | Iverson | Jack Tanner | 1 | 1 |
| Jay Acovone | Ray Galardi | Nicky Shaw | 1 | 1 |
| John Kapelos | Pauly Flores | Hank Draber | 1 | 1 |
| Lance Barber | Refrigerator Deliveryman | Daniel Cardeira | 1 | 1 |
| Lochlyn Munro | Tony Lucarelli | Keith Farrow | 1 | 1 |
| Malcolm Barrett | Malcolm O'Dwyer | Officer Clarence Price | 1 | 1 |
| Matt Winston | Brian Babbage | Mitch Cavanaugh | 1 | 1 |
| Molly Hagan | Ms. Lennington | Elizabeth Hennings | 1 | 1 |
| Peter Onorati | Archie Modine | Oliver Westhoff | 1 | 1 |
| Rose Abdoo | Mrs. Monk | Sheila | 1 | 1 |
| Tamlyn Tomita | Eileen Hill | Lauri Medina | 1 | 1 |
| Todd Stashwick | Gene Edelson | Jared Renfrew | 1 | 1 |
| Adam Kulbersh | Dr. Edward Garcia | Drake Vermilion | 1 | 1 |
| Andrea Bogart | Actor Playing Disher | Patience Broadbent | 1 | 1 |
| Ashley Williams | Theresa Scott | Anna Dugan | 1 | 1 |
| Benito Martinez | Ex-Marine | Commander Delgado | 1 | 1 |
| Brianna Brown | Joanne | Krystal Markham | 1 | 1 |
| Cameron Daddo | Darryl Wright | David Vance | 1 | 1 |
| Claire Rankin | Angeline Dilworth | Greta Marshall | 1 | 1 |
| Denise Dowse | Samantha Austin | SFPD Det. Carla Mulvey | 1 | 1 |
| Dina Meyer | Sally Larkin | Abigail Barge | 1 | 1 |
| Erin Cahill | Callie Esterhaus | Donna Hines | 1 | 1 |
| John Mese | Ringel | Justin DeGeorge | 1 | 1 |
| Jon Jon Briones | First Mercenary | Mr. Lam | 1 | 1 |
| Kerry O'Malley | Susan Donovan | Vivian Griswold | 1 | 1 |
| Lex Medlin | Richard Meckler | Chaplain Johnny Griffin | 1 | 1 |
| Marcus Giamatti | John Keyes | Gabriel Fanning | 1 | 1 |
| Patrick St. Esprit | Lody | Frank Lockhardt | 1 | 1 |
| Paul Ben-Victor | Al Nicoletto | Noah Landau | 1 | 1 |
| Ray Porter | Dale "the Whale" Biederbeck | Wick Ammon | 1 | 1 |
| Rebecca Field | Gail | Lucy Joel | 1 | 1 |
| Samantha Smith | Coach Hayden | Sylvia Hennigan | 1 | 1 |
| Taylor Nichols | Steve Connelly | Alex Mildray | 1 | 1 |
| Tom Virtue | Benjy's coach | George Palmer | 1 | 1 |
| Kathryn Joosten | Neysa Gordon, Nurse Stempel | Gloria Williams | 2 | 1 |
| Tom Kiesche | Annoyed Mover, Mover | Ronald Hendricks | 2 | 1 |
| Amanda MacDonald | Alien Girl Enthusiast | Suzie | 1 | 1 |
| Andrew Rothenberg | Medical Examiner | Jack Hellion | 1 | 1 |
| Andy Mackenzie | Drug Dealer | John "Tiny" Callahan | 1 | 1 |
| Brian McNamara | Kyle Brooks | Deke Hutton | 1 | 1 |
| Dennis Boutsikaris | Dr. Morris Lancaster | Dr. Michael Rubin | 1 | 1 |
| Erich Anderson | John Buxton | Hopper Banks | 1 | 1 |
| Fay Masterson | Diane Luden | Melinda Batson | 1 | 1 |
| Harry Groener | John Ricca | Francisco Navarro | 1 | 1 |
| James C. Victor | Limo Driver | Jeffrey Barge | 1 | 1 |
| Jean Carol | Aunt Madge | Wealthy Woman | 1 | 1 |
| Jennifer Ann Massey | Cameron | Woman at Auction | 1 | 1 |
| Jim O'Heir | Park Ranger | Mr. Norris | 1 | 1 |
| John Lacy | Chauncey Cunningham | Kyle Rayburn | 1 | 1 |
| Jon Polito | George Gionopolis | Bertram Duesterberg | 1 | 1 |
| Jonathan Chase | College Boy #1, Living Statue | Sandy Bauer | 2 | 1 |
| Jose Pablo Cantillo | Carlos | Angel | 1 | 1 |
| Jude Ciccolella | Tom Bennett | Freddy Fitch | 1 | 1 |
| Mark Harelik | Mikel Alvanov | Kenyon Russell | 1 | 1 |
| Mark Ivanir | Edgar Heinz | Jan Nemic | 1 | 1 |
| Michael Hogan | Warren St. Claire | Sean Barlow | 1 | 1 |
| Paul Hayes | Mr. Cooper | Building Super | 1 | 1 |
| Rey Gallegos | Eddie Dial | Raoul | 1 | 1 |
| Rick Hoffman | Agent Colmes | Christopher Lynch | 1 | 1 |
| Rob Benedict | Jonathan Davenport | Paul Friedman | 1 | 1 |
| Rob Evors | Kramer | Howie | 1 | 1 |
| Val Lauren | Bartender | Cole Foster | 1 | 1 |
| Vincent Ventresca | Rob Sherman | Duncan Weaver | 1 | 1 |
| Wade Williams | Captain Frank Willis | Jack LaFleur | 1 | 1 |
| Wings Hauser | Mr. Cobb | A.P. Caid | 1 | 1 |
| Cameron Meyer | 2nd Angry Mother, Script Supervisor | Medical Examiner | 2 | 1 |
| Eileen Grubba | Darlene, Mother | Vendor Woman | 2 | 1 |
| Andrew Borba | Parole Commissioner | Inspector Bobby Wilson | 1 | 1 |
| Chris Coy | Second Slacker | Foley | 1 | 1 |
| Chris Owen | Trainee | Nick / Megafan8 | 1 | 1 |
| David DeLuise | Larry Cutler | Mr. Loveland | 1 | 1 |
| Federico Dordei | Michael the Cook | Adrien Ludo | 1 | 1 |
| Gary Kraus | Entry Guard | Larry Kincaid | 1 | 1 |
| Hayley Chase | Emily C. | Darlene Pappas | 1 | 1 |
| Heather Tom | Linda Riggs | Marva | 1 | 1 |
| J.C. MacKenzie | Sidney Teal | Dr. Griffin Welks | 1 | 1 |
| Jack Kehler | Harvey Disher | Playland Owner | 1 | 1 |
| Jeris Lee Poindexter | Eddie | Manager | 1 | 1 |
| Michael B. Silver | Lyle Turrow | Julius Coles | 1 | 1 |
| Mike Rock | Lt. Dylan | Clown | 1 | 1 |
| Rif Hutton | Dr. Malding | Doctor | 1 | 1 |
| Rocky McMurray | Captain Stockton | Highway Patrolman | 1 | 1 |
| Rodney Eastman | Del Johnston | Lee Skelling | 1 | 1 |
| Samantha Quan | Female Control Officer | Megan Parker | 1 | 1 |
| Shane Edelman | Woody Mitchum | Abel Schneiderman | 1 | 1 |
| Stephanie Erb | Gail Segalis | Betsy Firth | 1 | 1 |
| Stephen Sowan | Suspicious Kid | Dylan | 1 | 1 |
| Karl T. Wright | Monk's Lawyer, Principal Thicket | Attorney | 2 | 1 |
| Adria Tennor | Donna DiMarco | Event Hostess | 1 | 1 |
| Anne Gee Byrd | Mrs. Kennedy | Neighbor Lady | 1 | 1 |
| Benjamin Burdick | Gary the Caddie | Florian Tripp | 1 | 1 |
| Bob Gunton | Dwight Ellison | Alexander Harrington | 1 | 1 |
| Christopher Goodman | CSI Tech, Young Uniform Cop | Lieutenant Sheridan | 2 | 1 |
| Cyd Strittmatter | Clarissa | Neurologist | 1 | 1 |
| David Meunier | Ray Kaspo | Yegor Golenka | 1 | 1 |
| Devon Gummersall | Phil Bedard | Gabriel Quinn | 1 | 1 |
| Frank Clem | Ron Neely | Andy | 1 | 1 |
| Gregory Sporleder | Kenneth Nichols | Terence Badali | 1 | 1 |
| Jake Richardson | Dwayne | Mike Flynn | 1 | 1 |
| Jesse James | Jared Stottlemeyer | Lucas Hodge | 1 | 1 |
| Kathe Mazur | Diana Phelps | Lisa Coates | 1 | 1 |
| Mary Chris Wall | Home Shopping Salesperson | Dr. Wendelyn McCormick | 1 | 1 |
| Michael Mantell | Brother Andrew | Leo Drembelas | 1 | 1 |
| Rich Hutchman | Cardiologist | Rafe Valiquette | 1 | 1 |
| Tim De Zarn | Max Barton | Arkin Shea | 1 | 1 |
| David Figlioli | Tommy Zimm | Building Manager | 1 | 1 |
| Dwayne L. Barnes | Officer Cooper | Jayden Flower | 1 | 1 |
| E.J. Callahan | Al the Vendor | Desk Clerk | 1 | 1 |
| Frank Gallegos | Chief Mechanic | Jupiter Gallidos | 1 | 1 |
| Frankie Ingrassia | Dr. Kroger's Receptionist | Gina Russo | 1 | 1 |
| Garret Davis | Plain Clothes Detective | Marty | 1 | 1 |
| Geoffrey Wade | Mandy's Lawyer | Minister | 1 | 1 |
| Hugo Armstrong | Medical Examiner | Mac the Cook | 1 | 1 |
| Jerry Kernion | Security Guard | Manager | 1 | 1 |
| Jim Jansen | Mayor Steven Rudner | Pastor Farley | 1 | 1 |
| Jon Sklaroff | The Iceman | Adam Reed | 1 | 1 |
| K.T. Thangavelu | Radiologist | Doctor | 1 | 1 |
| Karl Makinen | Xavier Danko | Christon Phelps | 1 | 1 |
| Kyle Davis | Ronnie | David Charles | 1 | 1 |
| Meredith Giangrande | Party Girl | Hot Girl | 1 | 1 |
| Michael Stoyanov | Steven Dorn | Wardell "Digger" Suggs | 1 | 1 |
| Noel Gugliemi | Jose Alverez | Kevin Cintron | 1 | 1 |
| Paul Lieber | Medical Examiner | Roger | 1 | 1 |
| Pepper Sweeney | Navy Cook | Deputy Parker | 1 | 1 |
| Boo Arnold | Cousin Curtis | U.S. Marshal Lawson | 1 | 1 |
| Esther Scott | Delores | Darla | 1 | 1 |
| Jack Betts | Cowboy Hank | Other Mobster | 1 | 1 |
| John Furey | Dennis | Smarmy Man | 1 | 1 |
| Kathryn Taylor Smith | Waitress | Hotel Security | 1 | 1 |
| Larry Clarke | Rudy | Robert "Bob" Ackerman | 1 | 1 |
| Madison Mason | Senate Committee Chairman | Ted Luscom | 1 | 1 |
| Michael Shamus Wiles | Jimmy Cusack | Walter DeMunn | 1 | 1 |
| Mike Grief | Big Man | Bailiff | 1 | 1 |
| Sharmila Devar | Cashier | Meera | 1 | 1 |
| Todd Eric Andrews | EMS Paramedic | Carmine O'Brien | 1 | 1 |
| Tom Yi | Mr. Kin | The Mark | 1 | 1 |
| Carl Ciarfalio | First Goon | Officer #1 | 1 | 1 |
| Cinda Adams | Mrs. Paddock | Middle-Aged Lady | 1 | 1 |
| Heather Brooker | 1st Gushing Fan | Second Inmate | 1 | 1 |
| Isabella Acres | Other Child | Charlotte Anne Jane | 1 | 1 |
| René Rivera | Captain Valez | Josef Rosales | 1 | 1 |
| Ross Mackenzie | Male Control Officer | Marshall | 1 | 1 |
| Sally Ann Brooks | Mrs. Bloom | Frankel Fogarty | 1 | 1 |
| Susan Chuang | Kathleen | Joyce Tran | 1 | 1 |
| Alejandro Chabán | Pablo Ortiz | Snake Gallidos | 1 | 1 |
| Ivar Brogger | Deputy Commissioner | Elliott Winston | 1 | 1 |
| Jeff Witzke | Human Cannonball | Eric Blair | 1 | 1 |
| Jim Hoffmaster | Vendor | Civilian Employee | 1 | 1 |
| Mandy McMillian | Yvette | Jenny | 1 | 1 |
| Robb Skyler | Hairy Customer | Jolly Dealer | 1 | 1 |
| Robert Catrini | Teddy Mulligan | Warden Haines | 1 | 1 |
| Angel Oquendo | Garage Attendant | Jorge Velasquez | 1 | 1 |
| Stephon Fuller | Gas Man | Prospector | 1 | 1 |
| Ernie Grunwald | Vampire Manager | Milton Howard | 1 | 1 |
| Kathleen M. Darcy | Mrs. Esterbrook | Edith Firlock | 1 | 1 |
| Nick Nordella | Teenage Attendant | Young Man on Bike | 1 | 1 |
| Tony Longo | Second Union Official | Large Biker | 1 | 1 |
| Amy Crofoot | Make-Up Person | Young Woman | 1 | 1 |
| Chuck Ashworth | Second Detective | FBI Agent #1 | 1 | 1 |
| David Greenman | Waiter | Josh | 1 | 1 |
| Jan Munroe | Dr. Whitcomb | Male Ranger | 1 | 1 |
| Nicole Greenwood | Reporter | Receptionist | 1 | 1 |
| Kent Shocknek | TV Reporter | Newscaster | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.