All 133 actors in both CSI: Crime Scene Investigation and The Unit
133 actors have appeared in both CSI: Crime Scene Investigation and The Unit, across 406 episodes. The most-credited is Larry Sullivan, Officer Akers, Officer Andy Akers in CSI: Crime Scene Investigation and Avner in The Unit.
| Actor | In CSI: Crime Scene Investigation | In The Unit | Eps | Eps |
|---|---|---|---|---|
| Larry Sullivan | Officer Akers, Officer Andy Akers | Avner | 40 | 1 |
| Conor O'Farrell | Undersheriff McKeen | Major General Heath | 13 | 4 |
| Summer Glau | Mandy Cooper | Crystal Burns | 1 | 7 |
| Bre Blair | Tracy | Joss Morgan | 2 | 5 |
| Benito Martinez | Gabriel Ortiz | Benjamin Castillo | 1 | 3 |
| Daniel Wisler | Yak #4 | Jeremy Erhart | 1 | 5 |
| Dean Norris | Phil Baker | Supervisor Marsh | 3 | 2 |
| Matt Malloy | Max Sullivan | Dr. Farris | 1 | 4 |
| Damon Herriman | Dwayne Simpson | Sgt. Parker | 1 | 1 |
| Eric Ladin | Delf Rod | Blaylock | 1 | 1 |
| Matt Gerald | Vincent Lafoon | Beau Dauber (Unit Member) | 1 | 3 |
| Michele Greene | Jan Branson, Sue Schiff | Cynthia Burdett | 2 | 4 |
| David Gianopoulos | Daniel Pritchard | U.N. Chief Security Officer | 2 | 1 |
| Kirk B.R. Woller | Prison Official | Detective Penman | 1 | 2 |
| Richard Gilliland | Mr. Steiner, Stan Brock / Charlene Living Doll | Ellis Kapp | 2 | 1 |
| Dayton Callie | Ernie Edward Dell | Middle Aged Man | 3 | 1 |
| Lindsay Frost | Marjorie Wescott | Senator Webb | 1 | 3 |
| Alex Wexo | Stargazer | Det. Humphrey | 1 | 1 |
| C.S. Lee | Vincent Carrado | XO | 1 | 1 |
| David Meunier | Barry Lawrence, Boyd Waldrip | Michael Angelli | 2 | 1 |
| Dominic Hoffman | Roy Narvick | Neil Krinsman | 1 | 2 |
| Jim Beaver | Stanley Tanner | Lloyd Cole | 2 | 1 |
| Kevin Will | Foreman, Male Parent | Man in Stall | 2 | 1 |
| Mark Pellegrino | Bruno Curtis, Elliot Perolta | Gary Soto | 2 | 1 |
| Mitchell Fink | Paramedic Fink | Lazareff | 4 | 1 |
| Monique Gabriela Curnen | Xiomara Garcia | Sgt. Rosas | 3 | 1 |
| Ori Pfeffer | Kirk | Marc Granger | 1 | 2 |
| Patrick St. Esprit | Sheriff Owen Gardner | Agent Inman | 1 | 1 |
| Stacy Edwards | Vicki Winston | Marian Reed | 1 | 2 |
| Don McManus | Ed Burrows, Francis Lavalle | CIA Agent Billy | 2 | 2 |
| Chris Ellis | Warden Clinton Malton | Congressman Bruce Gelber | 1 | 2 |
| John de Lancie | General Robert Lansdale | Elliott Gillum | 1 | 2 |
| Karl Makinen | Kyle Planck | Coots | 1 | 2 |
| Luis Antonio Ramos | Jesus Cardenas, Lorenzo "Happy" Morales | Adolpho | 2 | 1 |
| Pat Asanti | Robert "Bob" Graham, Shop Foreman | Congressman Morton | 2 | 1 |
| Clare Carey | Joanna Higgins | Helene Rouse | 1 | 1 |
| Jeris Lee Poindexter | Grandpa Calvin | Robot Operator | 1 | 1 |
| Jim Ortlieb | Winston Barger | Principal | 1 | 1 |
| Melissa Tang | Erin Nagano | Anna | 1 | 1 |
| Robin Weigert | Dr. Valerie Dino | Annette Terry | 1 | 1 |
| Jamie McShane | Eddie Vonner, Jeff Berlin | Detective Renner | 2 | 1 |
| Vyto Ruginis | Phil Swelco | Doyle | 1 | 2 |
| Brian Howe | Harvey Wincroft, Mr. Winstons | Griffiths | 2 | 1 |
| Carsten Norgaard | German Agent #1 | U.N. Secretary General Anders Gam | 1 | 1 |
| Haley Ramm | Emily | Amber | 1 | 1 |
| Henri Lubatti | Charles Pinscher | Brian Mickey | 1 | 1 |
| J.J. Dashnaw | Brian Haddick | Agent #2, Frat Guy | 1 | 2 |
| James MacDonald | Officer Kenneth Ward | Willis Meeks | 1 | 1 |
| Jose Pablo Cantillo | I.A. Officer Galvez | Rock | 1 | 1 |
| Kenneth Mitchell | Dalton Burke | Keith Soto | 1 | 1 |
| Marco Rodríguez | Carlos' Lawyer | Cruz Mata | 1 | 1 |
| Myk Watford | David Jorgensen | Sergeant Wallace | 1 | 1 |
| Nancy Youngblut | Nurse | Ila Neihaus | 2 | 1 |
| Omar Leyva | Vasco Ruiz | Guard | 2 | 1 |
| Omid Abtahi | Chandru Dru Kambhatla | Boss | 1 | 1 |
| Sean McGowan | Sean Wyatt | Sgt. Edison | 1 | 1 |
| Brian D. Johnson | Brad Malone, Manny Senteno | Transport Pilot | 2 | 1 |
| Lisa Darr | Gwen Anderson, Nicole Jones | Beverly | 2 | 1 |
| Ntare Guma Mbaho Mwine | Tom Adler | Isaias | 2 | 1 |
| Peter Breitmayer | Clayton Ferris, Ed | Albright | 2 | 1 |
| Sandy Martin | Female Trucker, Office Manager | Woman with Cane | 2 | 1 |
| Andrew Rothenberg | Walter Ellis | Pool Player | 1 | 1 |
| Conrad Roberts | Palo Priest | Elder | 1 | 1 |
| David Andriole | Terry Rivers | August Tavish | 1 | 1 |
| Dwier Brown | Young Sam Braun | Ambassador Blashek | 1 | 1 |
| Gonzalo Menendez | Sheriff Anderson | Vasquez | 1 | 1 |
| Jake McLaughlin | Matt Bartley | Prison Guard | 1 | 1 |
| Jon Hershfield | N.D. Student | Tech | 1 | 1 |
| Josh Wingate | Clay Miller | Marine Sergeant | 1 | 1 |
| Lee Tergesen | Martin Hawkins | Alex Deckard | 1 | 1 |
| Marlene Forte | Mrs. Pamela Gentry | Maritza Calderon | 1 | 1 |
| Rey Valentin | Elvis Rodriguez | Sergeant Ross | 1 | 1 |
| Sven Holmberg | Bassist | Zjhokar | 1 | 1 |
| Colby French | Officer Davis | Welfare Man | 2 | 1 |
| Michelle Anne Johnson | Pamela Adler | Support Tech | 2 | 1 |
| Andrew Kirsanov | Holy Steven | The Imposter | 1 | 1 |
| Anthony Azizi | Adrian Dinan | Amin Al-Nura | 1 | 1 |
| Cliff DeYoung | Mr. Del Negro | C.O.S | 1 | 1 |
| Cyrus Farmer | Reno Detective | The Salesman | 1 | 1 |
| Gabriel Salvador | Corrections Officer, Officer Casey | Monk #1 | 2 | 1 |
| Gina Torres | Warden | Sgt. Natasha Andrews | 1 | 1 |
| Joel Polis | Judge Silvio Peters | Administrator | 1 | 1 |
| Mark Ivanir | Cirque Manager | Yuri | 1 | 1 |
| Matt Bushell | Point Man | Sgt. Burroughs | 1 | 1 |
| Sarah Lafleur | Jenny Carroll | Mrs. Johnson | 1 | 1 |
| Terrence Edwards | LAPD Officer #2 | Foster | 1 | 1 |
| Tim Sitarz | Hooper | Biker #2 | 1 | 1 |
| Andy Umberger | Rob Rhoda | Agent Bluman | 1 | 1 |
| Anne Bedian | Officer Linda Mendosa | Mother | 1 | 1 |
| Bahar Soomekh | Dr. Sylvia Sloane | Firefly | 1 | 1 |
| David Thomas Jenkins | Frat Pledge #4 | Bill | 1 | 1 |
| Eric Steinberg | Eric Louie | General Raja | 1 | 1 |
| Jeremy Roberts | Mr. Arnz | Duke | 1 | 1 |
| Jorge-Luis Pallo | John | Turo | 1 | 1 |
| Corey Stoll | Clerk | Bobby Carrol | 1 | 1 |
| Jeremy Denzlinger | N.D. Uniform #2 | Morgan | 1 | 1 |
| Kevin 'Repo' Thomas | Smitty | Biker #1 | 1 | 1 |
| Lois Hall | Madeline Foster | Pauline Harper | 1 | 1 |
| Lydia Blanco | Maid | Wife #3 | 1 | 1 |
| Scott Klace | Carl Johnson | Wilpon | 1 | 1 |
| Tom Kiesche | Larry Coombs | Gerald Thomas | 1 | 1 |
| Adam Lieberman | Dwight Connor | FBI Agent | 1 | 1 |
| Brando Eaton | Rodney Banks | Josh | 1 | 1 |
| Brian Tee | Denny Ocampo | Rebel Leader | 1 | 1 |
| Carlos Moreno Jr. | Landscaper | Gate Guard | 1 | 1 |
| Chris McGarry | Mike Marsh | Kevin Sack | 1 | 1 |
| Geno Monteiro | Bartender | Secret Service Agent | 1 | 1 |
| Gus Buktenica | Player | Kyle | 1 | 1 |
| Jack Wallace | Tony Mumms | Hank | 1 | 1 |
| Jason Manuel Olazábal | Louis Delgado | Mateo | 1 | 1 |
| Kate Orsini | Mini-Mart Clerk | Jenny | 1 | 1 |
| Lance Irwin | Huge Man | Bar Patron | 1 | 1 |
| Mark Aiken | Arthur Martens | Johansen | 1 | 1 |
| Raymond Ma | Sammy | Supervisor | 1 | 1 |
| Raymond O'Connor | Salesman | Bus Driver | 1 | 1 |
| Robert Mammana | Coach Tom Burns | Agent #1 | 1 | 1 |
| Sam Murphy | Scott Bonfilio | Wounded Soldier | 1 | 1 |
| Andy Fischer-Price | Ian Jones | Daniel Miller | 1 | 1 |
| Bryce Robinson | Robbie Wilton | Jake Mcneal | 1 | 1 |
| Chase Ryan Jeffery | Luke Daniels | Sam | 1 | 1 |
| Felipe Alejandro | Local Police Officer | D.W.P. Guy | 1 | 1 |
| James Kiriyama-Lem | Witness #1 | Crew Member | 1 | 1 |
| Jana Camp | Cult Member | Justine Cole | 1 | 1 |
| Larissa Laskin | Debbie Stein | Julianna | 1 | 1 |
| Dennis Hill | Paramedic | Analyst #1 | 1 | 1 |
| Matt Doherty | Twitchy Guy | Henderson | 1 | 1 |
| Natasha Alam | Svetlana Melton | Russian Girl | 1 | 1 |
| Gary Carlos Cervantes | Molina's Chief Trainer | Security Guard | 1 | 1 |
| Gill Gayle | Apartment Manager | Pawn Shop Owner | 1 | 1 |
| Roz Witt | Blue Hair | Teller | 1 | 1 |
| David H. Lawrence XVII | Car Wash Manager | Doctor | 1 | 1 |
| Jeffrey Hutchinson | Mr. Estrin | Building Handyman | 1 | 1 |
| Kevin Fry | Officer Mann | Tom Ryan's Stepfather | 1 | 1 |
← CSI: Crime Scene Investigation × The Unit
Cast data from TVmaze, licensed CC BY-SA 4.0.