All 118 actors in both Chicago Fire and NCIS
118 actors have appeared in both Chicago Fire and NCIS, across 805 episodes. The most-credited is Randy Flagler, Firefighter Harold Capp in Chicago Fire and Gibbs' C.O. in NCIS.
| Actor | In Chicago Fire | In NCIS | Eps | Eps |
|---|---|---|---|---|
| Randy Flagler | Firefighter Harold Capp | Gibbs' C.O. | 288 | 1 |
| Melissa Ponzio | Donna Boden | Drew Turner | 33 | 1 |
| Jeff Hephner | Jeff Clarke | Navy Commander Peter "Banshee" Sheridan | 20 | 1 |
| Jason Beghe | Sergeant Hank Voight | Blake Martin | 25 | 1 |
| Edwin Hodge | Firefighter Rick Newhouse | Bodie | 12 | 1 |
| Jack Conley | Chief Don Kilbourne | Metro Detective Danny Sportelli | 3 | 3 |
| Brooke Nevin | Tara Little | Rachael Sparks | 4 | 1 |
| Damon Dayoub | Firefighter Jake Cordova | Adam Eshel | 4 | 5 |
| Morocco Omari | Detective Vikan | NCIS Special Agent Thomas Survoy | 2 | 2 |
| Tania Raymonde | Officer Nicole Sermons | Anna Real, Chloe Marlene | 2 | 2 |
| Caitlin Carver | Emma Jacobs | Megan Porter | 9 | 1 |
| Brian Howe | Nick Porter | Sherriff Tom Barrett | 5 | 1 |
| Kamal Angelo Bolden | Firefighter Jason Kannell, Gere | Clarence Wyatt | 5 | 1 |
| Lauren Stamile | Susan Weller | Metro P.D. Detective Michelle Lane | 5 | 1 |
| Mo Gallini | Firefighter Jose Vargas | Andre Jones | 8 | 1 |
| Daniel Zacapa | Ramon Dawson | Detective Martin Alonzo | 7 | 1 |
| Nick Boraine | Dennis Mack | Merriweather | 3 | 2 |
| Brian Letscher | Coach Snyder | Sam Bennett | 1 | 1 |
| Carla Gallo | Pam Belfort | Melissa Wheeler Fox | 1 | 1 |
| Corey Sorenson | Andy Darden | Anthony Paxton | 3 | 1 |
| Katherine Cunningham | Corrine | Navy Lieutenant Laura Ellison | 3 | 1 |
| Louis Herthum | Pat Halstead | Ernest McCormick | 1 | 1 |
| Mike Starr | Arthur | Monroe Cooper | 5 | 1 |
| Mouzam Makkar | Anna | Sahar | 2 | 2 |
| Raphael Sbarge | Larry Herrmann | Rupert Kritzer | 1 | 1 |
| Spencer Treat Clark | Lee | Ryan Smith | 1 | 1 |
| Troy Winbush | Detective Pryma | Former Marine 1st Lieutenant Sam Keeler | 7 | 1 |
| Andrew Rothenberg | Mr. Jameson | Bruce Solomon | 4 | 1 |
| Fredric Lehne | Deputy District Chief Ray Riddle | Captain Graves | 7 | 1 |
| Chris L. McKenna | Keith Bamford | Eric Webb | 2 | 1 |
| Christopher Cousins | Steven Goody | Jordan Jones | 2 | 1 |
| JT Neal | Officer Chris Girardi | Dean | 2 | 1 |
| Robert Newman | Chief Burwell | Navy Admiral Wayne Hargrove | 1 | 2 |
| Wesam Keesh | Paramedic Jared Lennox | Hakim Bawali | 4 | 1 |
| Adria Dawn | Middle Aged Woman | Sandra Frasier | 1 | 2 |
| Amy Sloan | Captain Sydney Vonn | P.O. Cynthia Cluxton | 2 | 1 |
| Caleb Smith | Julian | USNPS ISB Special Agent Gage Winchester | 1 | 1 |
| Chris Johnson | Harrison | PO James Morgan | 2 | 1 |
| Chris Payne Gilbert | Mark Whittaker | Wesley Rowan | 1 | 1 |
| Dominic Rains | Dr. Crockett Marcel | Jamal Malik | 4 | 1 |
| Grant Harvey | Edgar Weston | Ian Maddux | 1 | 1 |
| Isaac Stephen Montgomery | Detective Gerard | Prison Guard Silver | 3 | 1 |
| Kelli Barrett | Renee Whaley | Ruby Lemere | 1 | 1 |
| Keston John | Turk | Mark Dominquez, Master Sergeant Brown | 1 | 2 |
| Kevin Chapman | Ron | Billy Doyle | 1 | 1 |
| Patrick Mulvey | Dr. Jim Shaw, Officer Bell | Milo Rankoff | 4 | 1 |
| Robert Knepper | Adrian Gish | Benson Long | 1 | 1 |
| Teri Reeves | Dr. Hallie Thomas | Navy LTJB Dana Robbins | 3 | 1 |
| David S. Lee | Don Ramsey | Veli Tupolev | 2 | 1 |
| James MacDonald | Assistant Deputy Commissioner Adam Perry | Capt. Faul, Navy Admiral Norton Padgett | 1 | 2 |
| Mac Brandt | Dell Cotner | Jake Spoke | 2 | 1 |
| Rachel DiPillo | Dr. Sarah Reese | Chelsea | 2 | 1 |
| Chris Agos | Assistant State's Attorney Steve Kot, Dr. Doriot | Captain Noah Finch | 4 | 1 |
| Adam J. Harrington | Cliff Belfort | Coast Guard Commander Sam Hendrix | 1 | 1 |
| Alicia Lagano | Paramedic Adler | Joann Allman | 1 | 1 |
| Barbara Eve Harris | Commander Emma Crowley | FAA Director Stacy Bergin | 3 | 1 |
| Christine Horn | Lydia Givens | Doctor Felicia Serena | 1 | 1 |
| Christopher Redman | Hank | Carl Fleming | 1 | 1 |
| Eileen Galindo | Mama Garcia | Evelyn Gomez | 1 | 1 |
| Jim Meskimen | CFD Chief, Maurice | Doctor Farrel Emerson | 3 | 1 |
| Jonathan Medina | Detective Navarro | Navy Commander Ted Morgan | 1 | 1 |
| Karina Logue | Kathy | Mrs. Johnson | 1 | 1 |
| Michael Reilly Burke | Chief Jaworski | Frank Connell | 1 | 1 |
| Nestor Serrano | Rick Esposito | NSA Supervisor Jeremy Marlens | 1 | 1 |
| Zack Ward | Ted Griffin | Police Officer Billy Krieg | 1 | 1 |
| Eliza Shin | Dr. Brenner, Nurse | Myrna | 4 | 1 |
| Boise Holmes | Officer Fojas | Security Guard, Security Supervisor | 1 | 2 |
| Matthew Del Negro | Interim Chief Pat Pridgen | Balboa | 2 | 1 |
| Devika Parikh | Chief Sharon Levine | Doctor Saanvi Singh | 1 | 1 |
| Eddie Shin | Chicago Center Operator | CGIS Special Agent Kyle Omagi | 1 | 1 |
| Eric Allan Kramer | Carl | Phillip Ekkerly | 1 | 1 |
| Eric Lynch | Officer Dichter, Officer Heslip, Police Officer | Gary Shay | 3 | 1 |
| Eric Petersen | Shep | NCIS Forensic Accountant Dale Weems | 2 | 1 |
| Jason Kelley | Cory | Marine Master Sergeant Ramsey Dillon | 1 | 1 |
| Jenny O'Hara | Ellie Norwich | Alice Brodie | 1 | 1 |
| John Lacy | Billy Nicholson | Park Ranger Kett | 1 | 1 |
| John Marshall Jones | Supervisory Special Agent Nathan Conway | Detective Hanley | 1 | 1 |
| JoNell Kennedy | Jasmine Lacey | Navy Commander Lisa Cleveland | 1 | 1 |
| Marika Engelhardt | Holly Boylan | Elisabeth Wenders | 1 | 1 |
| Maurice Irvin | Detective Hollander | Navy Commander Daly | 1 | 1 |
| Nick Jandl | Dr. Pete Calhoun | Michael "Mike" Kettering | 1 | 1 |
| Ronnie Gene Blevins | DeLong | Ronald Nowakowski | 1 | 1 |
| Loren Lazerine | Boat Captain, Paramedic Chief Colson | Building Manager | 2 | 1 |
| Steven W. Bailey | Mike Knowles | Dexter Murphy | 2 | 1 |
| Bernard White | Dr. Woodward | Afghani Ambassador Qasim Saydia | 1 | 1 |
| Brandon Davis | CPD Officer Bronson | Jimmy | 1 | 1 |
| Brian Kimmet | Danny Walback | Hotel Security Official George Barbado | 1 | 1 |
| Chris Cafero | Officer Nick Chaffee | StratComm Advisor Cooper Ellis | 1 | 1 |
| Craig Gellis | Scrapyard Owner | Civilian Crewman #1 | 1 | 1 |
| Frank Caeti | Bob Rezick | Gamer Nerd | 1 | 1 |
| Kayla Mae Maloney | Elizabeth | Emily Kingston | 1 | 1 |
| Lanny Joon | CFD Affairs Officer Kim | Edward Jintao | 1 | 1 |
| Paul Schackman | Vince Murphy | Sullivan Brady | 1 | 1 |
| Philip Anthony-Rodriguez | Chief Nate Hendricks | Former Marine LCPL Lloyd Jackson | 1 | 1 |
| Tony Nowicki | Theo | Seaman | 1 | 1 |
| Tosin Morohunfola | Tyrrell | Doctor Wayne Pershing | 1 | 1 |
| Tyler Jacob Moore | Nathan Carver | Richie Rose | 1 | 1 |
| Jerry Kernion | Firefighter Mickey Barnes | Pastor Alan, Scott Rowe | 1 | 2 |
| Maya Boudreau | Keri Hathaway, Missy Chapman | Lola Morales | 2 | 1 |
| Asanté Deshon | Mikey | MPD Rookie Farley | 1 | 1 |
| Assaf Cohen | Alex Cannon | Eli Lissack | 1 | 1 |
| Helen Eigenberg | Ellen Porter | Lt. Cmdr. Amanda Wilkerson | 1 | 1 |
| Jordan Murphy | Officer McDaniel | Navy Commander Ben Randall | 1 | 1 |
| Kelly Blatz | Officer John Elam | Navy Petty Officer Third Class Kyle Friedgen | 1 | 1 |
| Ransford Doherty | Lieutenant LeClerc | Navy Seal Petty Officer Second Class Zachary Harper | 1 | 1 |
| Rya Kihlstedt | Dr. McClain | Linda Idleton | 1 | 1 |
| Lily Rains | Nurse | Nora Williams | 1 | 1 |
| Ariel Felix | Jamael | Alon ATU | 1 | 1 |
| Gary Kraus | Deputy District Chief Clem Girardi | Chuck Parnell | 1 | 1 |
| Kim Shaw | Alicia | Former Navy Lieutenant Courtney Reed | 1 | 1 |
| Matt DeCaro | Sergeant Delaney | Chief Daryl Bello | 1 | 1 |
| Piter Marek | Alderman Daniel Rivas | Vijay Chaya | 1 | 1 |
| Rene L. Moreno | Warehouse Worker | Hector Cruz | 1 | 1 |
| Sue Cremin | Joan Cranston | Vivian Sutton | 1 | 1 |
| Danny Royce | IAD Aide | Reporter #2 | 1 | 1 |
| Lauran September | Natasha | Emma Thatcher | 1 | 1 |
| Sammy Sheik | Nizar | Iraqi Militia Guard at Road Block | 1 | 1 |
| Samantha Bailey | Receptionist | Little Angel | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.