All 206 actors in both 9-1-1 and CSI: Crime Scene Investigation
206 actors have appeared in both 9-1-1 and CSI: Crime Scene Investigation, across 480 episodes. The most-credited is Wallace Langham, Brian in 9-1-1 and David Hodges in CSI: Crime Scene Investigation.
| Actor | In 9-1-1 | In CSI: Crime Scene Investigation | Eps | Eps |
|---|---|---|---|---|
| Wallace Langham | Brian | David Hodges | 1 | 74 |
| Larry Sullivan | Dave Kramer | Officer Akers, Officer Andy Akers | 1 | 40 |
| Debra Christofferson | Sue Blevins | Regina Owens | 37 | 1 |
| Danny Nucci | Rick Romero | Det Daniel Sosa | 10 | 1 |
| Romy Rosemont | Lola Peterson | Jacqui Franco | 5 | 13 |
| Sasha Roiz | Lou Ransone | Danny Macklin | 6 | 1 |
| La Monde Byrd | David Hale | Young Harry Bastille | 11 | 1 |
| Arielle Kebbel | Lucy Donato | Blonde Teen | 10 | 1 |
| Daniel Roebuck | Norman Peterson | Frank Rosetti, Fred Paulsen | 5 | 2 |
| Chelsea Kane | Kameron | Brooke Cassidy | 5 | 1 |
| Henry G. Sanders | Samuel Carter | Bill Gibson | 5 | 1 |
| Tangie Ambrose | Lottery Ticket Woman | Miss Kitty / Angela Banner, Tina | 1 | 5 |
| Vanessa Marano | Sydney Grossman | Samantha Cafferty | 2 | 1 |
| Abby Brammell | Eva Mathis | Debra, Jane Gallagher | 6 | 2 |
| Vincent Duvall | Hugh | Swat Lt. Jack Parker, Mark Trent | 1 | 7 |
| Tiffany Dupont | Ali Martin | Cammie Brookston | 4 | 1 |
| Mark Derwin | Captain Thomas | James Mandelbaum, Braun's Lawyer | 4 | 3 |
| Aimeé Teegarden | Alex Doyle | Molly Sinclair | 3 | 1 |
| Chris Bauer | Sheriff Woodson | Detective Paul Browning | 1 | 1 |
| Eric Nenninger | Brian | Jesse, Officer Collins | 2 | 2 |
| Paula Marshall | Helena Diaz | Ms. Kathy Veck | 7 | 1 |
| Rick Worthy | Colonel John Hartman | Dr. Stewart | 2 | 4 |
| Scottie Thompson | Suzanne Barker | Lieutenant Debra Hughes | 1 | 1 |
| Josh Stamberg | Detective Ben Hooks | Dr. Tripton | 4 | 1 |
| Jeff Kober | Earl Sheets | Roger Wilder, Walter Douglas Hicks | 1 | 2 |
| Lauren Stamile | Ellie | Dr. Heather Lanning | 2 | 1 |
| Alicia Coppola | Carrie Walsh | Dr. Susan Hillridge | 3 | 1 |
| Leonard Roberts | Ronnie Cooper | Kyle Decker | 3 | 1 |
| Tony Amendola | Herman | Professor Rambar, The Super | 2 | 3 |
| Abigail Spencer | Amber Braeburn | Becky Lester | 2 | 1 |
| Alexis Krause | Justine Zerbiak | Rachel Walker | 1 | 1 |
| Assaf Cohen | Ellis | Doctor Lownis | 1 | 2 |
| Chris Johnson | Trey Walsh | Chuck Darwell | 3 | 1 |
| Colby French | Detective Marks | Officer Davis | 2 | 2 |
| Greg Evigan | Roger | Bruce Waters | 1 | 1 |
| Jack McGee | John "Red" Delacroix | Richard O'Malley, Road manager | 1 | 2 |
| Jeff Pierre | Emmett Washington | Officer Dunn | 1 | 1 |
| Jennifer Aspen | Lorraine | Mrs. Ramsey, Stacy Cano | 2 | 2 |
| Jim Holmes | Myron | Jim West | 4 | 1 |
| Krista Allen | Meegan | Kristy Hopkins | 1 | 3 |
| Mark Pellegrino | Mitchell Trent | Bruno Curtis, Elliot Perolta | 1 | 2 |
| Eric Allan Kramer | Kendall's Dad | Deputy Sheriff, Vic Patterson | 1 | 2 |
| Joseph Lyle Taylor | Marty Collins | Damon | 2 | 1 |
| Larry Poindexter | Maxwell Fulton | D.A. Claude Melvoy | 1 | 2 |
| Lilli Birdsell | Sylvia Mays | Dr. Monica Warren | 2 | 1 |
| William Russ | Chuck Summers | Jonah Quinn | 2 | 1 |
| Ian Reed Kesler | Ted | Vince Trufant | 1 | 1 |
| Jason Brooks | Jonathan Prescott | Simon Rose | 1 | 1 |
| Jessica Collins | Christina Gallagher | Missy | 1 | 1 |
| M.C. Gainey | Charlie | Frank Maddox | 1 | 1 |
| Melinda McGraw | Bonnie Sheets | Mrs. Griffin | 1 | 1 |
| Michael Graziadei | Eric Parnell | Kurt Francis | 1 | 1 |
| Steven Lee Allen | Morris | Security Guard | 1 | 1 |
| Zuleyka Silver | Nora Perez | Elena Punta | 1 | 1 |
| Arye Gross | Nathan Levinson | Paul Winston, Vincent DeMarcus | 1 | 2 |
| Doug Savant | Matthew Clark | Paul Brady | 2 | 1 |
| Faline England | Donna | Wendy | 2 | 1 |
| Gigi Rice | Tammy Felton | Terri Durbin, Yvette Baker | 1 | 2 |
| Jama Williamson | Det. Anita Mercer | Dina Bryant | 2 | 1 |
| John Brotherton | Tim Nash | Kevin Fetzer | 2 | 1 |
| Lex Medlin | Sean Coopertino | Sgt Barclay | 1 | 2 |
| Michael Bowen | Winslow Farrier | Jason Richter, Marty Cooperman | 1 | 2 |
| Todd Giebenhain | Dean | Donny, Usher | 1 | 2 |
| Todd Williams | Aaron Chester Brooks | Jeffrey Lanier | 2 | 1 |
| Tom Beyer | Minister | L. Collins | 1 | 2 |
| Vincent Ventresca | Coach | Connor Durman | 2 | 1 |
| Laurie Fortier | Savannah Richards | Carrie Jones, Janine Wood, Nancy | 1 | 3 |
| Ali Hillis | Jen | Olivia Fowler | 2 | 1 |
| Anthony Azizi | Jimmy Hadley | Adrian Dinan | 2 | 1 |
| Blake Lindsley | Kathy | Charlotte Summerville, Jessica Lovett | 1 | 2 |
| Brennan Elliott | Adam | Sergeant Carroll | 1 | 2 |
| Dana Davis | Carrie | Amanda Pedroia / Neon Kitty | 1 | 1 |
| James Eckhouse | Abe | Mr. Marlow, Paul Trent | 1 | 2 |
| Jessica Tuck | Dr. Imelda Royce | Sally West | 1 | 1 |
| John Rubinstein | Melvin | Judge Crawford, Priest | 1 | 2 |
| Karl Makinen | Officer Brogan McCluskey | Kyle Planck | 3 | 1 |
| Max Adler | Sam | Kyle Banks | 1 | 1 |
| Nancy Youngblut | Cynthia | Nurse | 1 | 2 |
| Pat Asanti | Murray | Robert "Bob" Graham, Shop Foreman | 1 | 2 |
| Patrick Fischler | Hollis Harcourt | Mr. Lee / Wolfie | 1 | 1 |
| Reggie Watkins | Detective Clifford Dixon | Officer Clark | 1 | 2 |
| Rich Ceraulo Ko | Officer Reyes | Officer Elliot Woo | 1 | 1 |
| Ross Partridge | Daniel Cooper | Ed Burnett | 1 | 1 |
| Sean O'Bryan | Charlie Nash | Reverend Rebetti | 2 | 1 |
| Tara Karsian | Ruth | Jill Paisley | 2 | 1 |
| Todd Robert Anderson | Gavin | Mr Wilder, Petey | 1 | 2 |
| Travis Schuldt | Sam Egan | Aron DeRosa | 1 | 1 |
| Andy Buckley | Kenny | Jason Hendler, Reporter #1 | 1 | 2 |
| Anthony Starke | Brunson | Matt Hudson, Richard Palento | 1 | 2 |
| David Meunier | Roman | Barry Lawrence, Boyd Waldrip | 1 | 2 |
| Devon Gummersall | Sasha | Kyle "X" Chatts, Taylor Reed | 1 | 2 |
| Eddie Jemison | Doctor Gibson | Craig Lifford | 2 | 1 |
| Nicole Paggi | Lizzie Hill | Nicole Exmoor, Sylvie Thornton | 1 | 2 |
| Patricia Bethune | Carol | Teacher, Wilma Shaw | 1 | 2 |
| Ashley Jones | Holiday Traveler | Shea Lammet | 1 | 1 |
| Autumn Reeser | Dr. Wells | Rachel Lyford | 1 | 1 |
| Briana Lane | Storm | Maddie | 1 | 1 |
| Charisma Carpenter | Maude | Mink | 1 | 1 |
| Christopher Cousins | Charles Bryson | Ken Wallace | 1 | 1 |
| David Kaufman | Cemetery Worker | Halo Metz | 1 | 1 |
| Eric Ladin | Gary | Delf Rod | 1 | 1 |
| J. Downing | Doctor | Walter Blaine | 1 | 1 |
| Nikki DeLoach | Janell Hansen | Heather | 1 | 1 |
| Rebecca Wisocky | Marjorie Daniels | Shirley | 1 | 1 |
| Rich Sommer | LAFD Captain Thorne | Scott Horan | 1 | 1 |
| Rob Benedict | Oswald "Ozzie" Smith | Brian Morley | 1 | 1 |
| Brian Howe | Harlow | Harvey Wincroft, Mr. Winstons | 1 | 2 |
| Juliette Goglia | Hudson Groupie | Hannah West | 1 | 2 |
| Tom Wright | Buck's Doctor | Bob Harris, Jake Daniels | 1 | 2 |
| Wiley Pickett | Captain Cooks | Christian, Training Officer | 1 | 2 |
| Charles Baker | Petey | Denny Morrison | 1 | 1 |
| Christian Clemenson | Franklin | Charles Pellew | 1 | 1 |
| Donzaleigh Abernathy | Joanne Kingston | Carolina Bell | 1 | 1 |
| Eddie McClintock | Victor | Finn Thomas | 1 | 1 |
| Frederick Koehler | Carl Gates | Danny Hillman | 1 | 1 |
| Gina Torres | Tommy Vega | Warden | 1 | 1 |
| Gonzalo Menendez | Airport Officer | Sheriff Anderson | 1 | 1 |
| Jenny O'Hara | Nora Curtis | Sandra Walkey | 1 | 1 |
| Ramón de Ocampo | Wyatt Hawkerson | Julian Santiago | 1 | 1 |
| Ray Porter | Eugene | Carl Van Goe | 1 | 1 |
| Rya Kihlstedt | LAFD Chief Walker | Carolyn Logan | 1 | 1 |
| Sarah Dumont | Bethany | Vicky Sheldon | 1 | 1 |
| Stephanie Lemelin | Stella | Ally Sullivan | 1 | 1 |
| Tina Ivlev | Marylou | Kirsten | 1 | 1 |
| Tom Virtue | Tire Store Employee | Doctor, George | 1 | 2 |
| Tricia O'Kelley | Rita Ambrose | Debbie Dunbar | 1 | 1 |
| Jeanette O'Connor | Nosy Neighbor, Pearl | Catty Woman | 2 | 1 |
| Alex Solowitz | Barry Johnson | Barry Wunderlick | 1 | 1 |
| DaJuan Johnson | Mike | Officer Desmond | 1 | 1 |
| Emma Fitzpatrick | Stephanie | Mary Wade | 1 | 1 |
| Kasey Mahaffy | Lyle | Ian Doyle | 1 | 1 |
| Kayla Ewell | Blair Andrews | Bettina Claire | 1 | 1 |
| Keith Szarabajka | Rory | Randy | 1 | 1 |
| Maggie Egan | Janice | Woman | 1 | 1 |
| Meagen Fay | Dorothy Nelson | Rochelle Dorley | 1 | 1 |
| Nick Searcy | Father Jameson | Sheriff Burdick | 1 | 1 |
| Robert Curtis Brown | Ronald | Dan Keaton | 1 | 1 |
| Steven Culp | Henry Wallace | Lt. Mendes | 1 | 1 |
| Christopher Gartin | Nick Durso | Dr. Holloway, Marcus Corcoran | 1 | 2 |
| Mona Wyatt | Lyndsey Jenkins | Gwen Murray | 2 | 1 |
| Andy Umberger | Deputy Chief Phil Evans | Rob Rhoda | 1 | 1 |
| Christopher Poehls | Young Thomas | Stuart Ball | 1 | 1 |
| Corey Mendell Parker | Foreman | Nae Allen | 1 | 1 |
| Craig Welzbacher | Tour Guide | Jimbo | 1 | 1 |
| Dan Martin | Doctor | Plant Nursery Worker | 1 | 1 |
| Dylan Neal | Dr. Sampson | Mr. Culver | 1 | 1 |
| John Hensley | David | Jesse Hottman | 1 | 1 |
| Joshua Malina | Asher Montridge | DA Monroe | 1 | 1 |
| Marianne Muellerleile | Mrs. Ulyanov | Dolores Rinaldi | 1 | 1 |
| Rick Otto | Detective Newell | Jack Weaver | 1 | 1 |
| Salvator Xuereb | Steven | Keith Castle | 1 | 1 |
| Sandra Cevallos | Judge Priya Atkins | Hispanic Woman | 1 | 1 |
| Sandra Thigpen | Cynthia | Driscoll's Attorney | 1 | 1 |
| Stepfanie Kramer | Janet | Vivian Brentson | 1 | 1 |
| Adrian Quiñonez | Hank | Alex Brenner | 1 | 1 |
| Amy Pietz | Tori | Rebecca McCormick | 1 | 1 |
| Casey Biggs | Ned Filson | Mr. Wilmot | 1 | 1 |
| David Atkinson | Farmer Rick McDouglas | Carl Bowden | 1 | 1 |
| David DeLuise | Tom Gladden | Cliff Renteria | 1 | 1 |
| David Paladino | Instructor #1 | Officer Pratt | 1 | 1 |
| Joseph Will | Dean | Walt Braun | 1 | 1 |
| Kelly Smith | Nora Jane Curtis | Allison Shram | 1 | 1 |
| Larry Bagby | Carwash Manager | Hank Dudek | 1 | 1 |
| Lyle Kanouse | Protester | Bruce Eiger | 1 | 1 |
| Paula Jai Parker | Judith Spivey | Julia Beltran | 1 | 1 |
| Randy J. Goodwin | Skydiving Pilot | Myles Rueben | 1 | 1 |
| Sean Christopher Davis | Landlord | Cadet #1 | 1 | 1 |
| Shane Coffey | Dylan | Pete Moyer | 1 | 1 |
| Zeus Mendoza | ATF Agent Sean Boyd | Roger Mathers | 1 | 1 |
| Jeremy Cohenour | Paulie | Cell Phone Dude, Young Knuckles Pratt | 1 | 2 |
| Jenica Bergere | Nina | Concierge | 1 | 1 |
| Lucas Kerr | Brent | Matthew Tarland | 1 | 1 |
| Nancy Valen | Natalie Gainey | Neighbor | 1 | 1 |
| Nina Millin | Yvette Sims, Esq. | Street Person #1 | 1 | 1 |
| Pat Millicano | Truck Driver | Cameron Black | 1 | 1 |
| Tom Parker | Alex | SWAT Runner | 1 | 1 |
| Brian Allen | Patient | Teddy Floyd | 1 | 1 |
| Cate Cohen | Christine | Officer Kamen | 1 | 1 |
| Jamie Martz | Vern | Barry Shickle | 1 | 1 |
| Jeremy Glazer | Ben Watson | David Winnock | 1 | 1 |
| Josh Daugherty | Mickey | Ty Bentley | 1 | 1 |
| Julianna Guill | Leah Hamilton | Monica | 1 | 1 |
| Michael Earl Reid | Reggie Simmons | Gambler Rufus Sanders | 1 | 1 |
| Roopashree Jeevaji | Dr. Gendy | Receptionist | 1 | 1 |
| Rusty Schwimmer | Edna | Lorna Tenney | 1 | 1 |
| Tim De Zarn | Cecil Farrier | Mr. Carlton | 1 | 1 |
| Annie Little | Jill Evans | Robin | 1 | 1 |
| Asante Jones | Jack Tannor | Swat Captain | 1 | 1 |
| Cullen Douglas | Harv | Manager | 1 | 1 |
| Gene Farber | Oliver | Joe | 1 | 1 |
| Ivar Brogger | Dr. Irving | Jacob Wolf | 1 | 1 |
| Judy Jean Berns | Phyllis Lang | Mrs. Rose | 1 | 1 |
| Kate Orsini | Jane | Mini-Mart Clerk | 1 | 1 |
| Roy Abramsohn | Middle Aged Man | Reporter 1 | 1 | 1 |
| Shane Conrad | Kenneth Malone | J.J Milton | 1 | 1 |
| Steven M. Gagnon | Percy | Bailiff | 1 | 1 |
| Thomas Crawford | Joseph | Janitor | 1 | 1 |
| Cyd Strittmatter | Mallory | Dr. Wilson | 1 | 1 |
| S. Zylan Brooks | Hospital Staffer | Dispatcher | 1 | 1 |
| Carlos Moreno Jr. | Miguel | Landscaper | 1 | 1 |
| Jim Hanna | St. Patrick | Jack | 1 | 1 |
| Mark Elias | Groom | Young Mason Carter | 1 | 1 |
| Stewart Skelton | Minister | FBI Man | 1 | 1 |
| Todd Sandler | Firefighter Wally | Probation Officer | 1 | 1 |
| Christopher Gehrman | Vince Kemper | Adam Masters | 1 | 1 |
| Erin Spencer | Sue | Melissa Poolie | 1 | 1 |
← 9-1-1 × CSI: Crime Scene Investigation
Cast data from TVmaze, licensed CC BY-SA 4.0.