# List of NCIS cast members

Below is a list of actors and actresses that are part of the cast of the American police procedural drama television series NCIS.

## Cast members

This table lists characters who have appeared in two, or more, episodes (excluding flashbacks) and the cast members who have portrayed them.
| Character | Portrayed by | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season | Season |
| Character | Portrayed by | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Main cast ||||||||||||||||||||||||
| Leroy Jethro Gibbs | Mark Harmon | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Does not appear | Does not appear | Does not appear |
| Leroy Jethro Gibbs | Sean Harmon (young) Micah Owens (young) | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear |
| Caitlin Todd | Sasha Alexander | Main | Main | R | Does not appear | Does not appear | Does not appear | Does not appear | G | G | Does not appear | Does not appear | G | Does not appear |
| Anthony DiNozzo | Michael Weatherly | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | G | Does not appear |
| Abby Sciuto | Pauley Perrette | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Donald "Ducky" Mallard | David McCallum | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Does not appear | Does not appear |
| Donald "Ducky" Mallard | Adam Campbell (young) | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Main | Main | Main | Does not appear | Does not appear | Does not appear | Main | Does not appear | Does not appear | Does not appear | Does not appear |
| Timothy McGee | Sean Murray | R | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main |
| Ziva David | Cote de Pablo Gabi Coccio (young) | Does not appear | Does not appear | Main | Main | Main | Main | Main | Main | Main | Main | Main | Does not appear | Does not appear | Does not appear | Does not appear | G | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jenny Shepard | Lauren Holly | Does not appear | Does not appear | Main | Main | Main | Does not appear | Does not appear | Does not appear | G | Does not appear | Does not appear | G | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Leon Vance | Rocky Carroll | Does not appear | Does not appear | Does not appear | Does not appear | R | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main |
| Jimmy Palmer | Brian Dietzen | R | R | R | R | R | R | R | R | R | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main | Main |
| Ellie Bishop | Emily Wickersham | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Main | Main | Main | Main | Main | Main | Main | Main | Does not appear | Does not appear | Does not appear | Does not appear |
| Nick Torres | Wilmer Valderrama | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Main | Main | Main | Main | Main | Main | Main | Main | Main |
| Alex Quinn | Jennifer Esposito | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Main | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Clayton Reeves | Duane Henry | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Main | Main | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jack Sloane | Maria Bello | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Main | Main | Main | Main | Does not appear | Does not appear | Does not appear | Does not appear |
| Kasie Hines | Diona Reasonover | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Main | Main | Main | Main | Main | Main | Main |
| Jessica Knight | Katrina Law | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Main | Main | Main | Main |
| Alden Parker | Gary Cole | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Main | Main | Main | Main |
| Family ||||||||||||||||||||||||
| Victoria Mallard | Nina Foch Caroline Lagerfelt | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Sarah McGee | Troian Bellisario | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Kelly Gibbs | Mary Mouser Brenna Radding Sam Schuder Mila Brener | Does not appear | Does not appear | R | R | R | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Shannon Gibbs | Darby Stanchfield Aviva (young) | Does not appear | Does not appear | R | Does not appear | R | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Diane Sterling | Heather Scobie Melinda McGraw | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Eli David | Michael Nouri Ben Morrison (young) | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jackson Gibbs | Ralph Waite Rob Notron (young) | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jackie Vance | Paula Newsome | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jared Vance | Khamani Griffin Akinsola Aribo | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Kayla Vance | China Anne McClain Kiara Muhammad Naomi Grace | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | R | R | R | R | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | R | Does not appear | Does not appear |
| Anthony DiNozzo Sr. | Robert Wagner | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | R | R | R | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Breena Slater | Michelle Pierce | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear |
| Rachel Cranston | Wendy Makkena | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Kyle Davis | Daniel Louis Rivas | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jake Malloy | Jamie Bamber | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| NCIS and Navy employees ||||||||||||||||||||||||
| Tom Morrow | Alan Dale | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Gerald Jackson | Pancho Demmings | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Bud Roberts | Patrick Labyorteaux | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Stan Burley | Joel Gretsch | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Paula Cassidy | Jessica Steen | R | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Chris Pacci | Tim Kelleher | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Cassie Yates | Tamara Taylor | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Charles Sterling | Michael Bellisario | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Cynthia Sumner | Stephanie Mello | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Mike Franks | Muse Watson | Does not appear | Does not appear | R | R | R | R | R | R | R | R | R | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Michelle Lee | Liza Lapira | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Nikki Jardine | Susan Kelechi Watson | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Brent Langer | Jonathan LaPaglia | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Chad Dunham | Todd Lowe | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Phillip Davenport | Jude Ciccolella | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Susan Grady | Jackie Geary | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Riley McCallister | Michael O'Neill | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| E.J. Barrett | Sarah Jane Morris | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Simon Cade | Matt Willig | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Gayne Levin | Alimi Ballard | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Clayton Jarvis | Matt Craven | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Ned Dorneget | Matt Jones | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jerome Craig | Greg Germann | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Sarah Porter | Leslie Hope | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Tony Francis | Tony Gonzalez | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Qasim Naasir | Rafi Silver | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Other agencies ||||||||||||||||||||||||
| Tobias Fornell | Joe Spano | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | Does not appear | R | R | R | R | Does not appear |
| Faith Coleman | Alicia Coppola | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Ron Sacks | Don Franklin | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Hollis Mann | Susanna Thompson | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Trent Kort | David Dayan Fisher | Does not appear | Does not appear | Does not appear | R | R | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Michael Rivkin | Merik Tadros | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Amit Hadar | Arnold Vosloo | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Danny Sportelli | Jack Conley | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Abigail Borin | Diane Neal | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Malachi Ben-Gidon | TJ Ramini | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Ray Cruz | Enrique Murciano | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Samantha Ryan | Jamie Lee Curtis | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Delilah Fielding | Margo Harshman | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | R | R | Does not appear | R | R | R | R | Does not appear |
| Zoe Keats | Marisol Nichols | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Antagonists ||||||||||||||||||||||||
| Ari Haswari | Rudolf Martin | R | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Mamoun Sharif | Enzo Cilenti | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| René Benoit ("La Grenouille") | Armand Assante | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Saleem Ulman | Omid Abtahi | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Alejandro Rivera | Marco Sanchez | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Paloma Reynosa | Jacqueline Obradors | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Agah Bayar | Tamer Hassan | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jonas Cobb | Kerr Smith | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Jonathan Cole | Scott Wolf | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Sean Latham | Philip Casnoff | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Harper Dearing | Richard Schiff | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Ilan Bodnar | Oded Fehr | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Paul Triff | French Stewart | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Gabriel Hicks | Graham Hamilton | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Other characters ||||||||||||||||||||||||
| Jeanne Benoit | Scottie Thompson | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Emily Fornell | Payton Spencer Juliette Angelo | Does not appear | Does not appear | Does not appear | | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear |
| Damon Werth | Paul Telfer | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Leyla Shakarji | Tehmina Sunny | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Carol Wilson | Meredith Eaton | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | R | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear |
| Margaret Allison Hart | Rena Sofer | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Dr. Cyril Taft | Jon Cryer | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Dr. Grace Confalone | Laura San Giacomo | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | R | R | R | R | R | R | R | R |
| Jessica Shaeffer | Hilary Ward | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear |
| Phineas | Jack Fisher | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear | Does not appear |
| Marcie Warren | Pam Dawber | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | Does not appear | R | R | Does not appear | Does not appear | Does not appear |

## Crossovers
### JAG

* Mark Harmon, Michael Weatherly, David McCallum, and Pauley Perrette all appeared in two episodes of season eight of JAG that served as a backdoor pilot.
* Patrick Labyorteaux appeared as his JAG character in three episodes of NCIS (one each in seasons 1, 14, and 15)
* John M. Jackson appeared as his JAG character in one episode of season ten of NCIS.
* Adam Baldwin appeared as his JAG character in one episode of season one of NCIS.
* Alicia Coppola appeared as her JAG character in three episodes of NCIS (one in season one and two in season two).

### NCIS: Los Angeles

* Chris O'Donnell, Peter Cambor, Daniela Ruah, Barrett Foa, LL Cool J, and Brian Avers all appeared as their NCIS: Los Angeles characters in two episodes of NCIS' season six that served as a backdoor pilot.
* Rocky Carroll appeared in ten episodes of NCIS: Los Angeles as his NCIS character (seven in season one, and one each in seasons two, three, and six).
* Pauley Perrette appeared in two first-season episodes of LA.
* David Dayan Fisher appeared in one first-season episode of LA
* Michael Weatherly appeared in one seventh-season episode of LA
* Kelly Hu appeared in one episode of the seventh season of NCIS as her LA character.

### NCIS: New Orleans

* Scott Bakula, Zoe McLellan, Lucas Black, and C. C. H. Pounder all appeared as their NCIS: New Orleans characters in two episodes of NCIS' season 11 that served as a backdoor pilot.
* Actors who appeared on the first season of NCIS: New Orleans as their NCIS characters include Diane Neal (three), Rocky Carroll (three), Pauley Perrette (one), Meredith Eaton (one), Joe Spano (one), David McCallum (one), Michael Weatherly (one), and Mark Harmon (one).
* Leslie Hope appeared in one second-season episode of NCIS: New Orleans as her NCIS character

## Guest stars

* Ray Abruzzo
* Jay Acovone
* Patrick J. Adams
* Tyrees Allen
* Laz Alonso
* Erich Anderson
* David Andriole
* John Asher
* Mackenzie Astin
* Sean Astin
* René Auberjonois
* Erick Avari
* Jack Axelrod
* Julian Bailey
* Adam Baldwin
* Bonnie Bartlett
* Michael Beach
* Gerry Becker
* Jason Beghe
* Julie Benz
* Brad Beyer
* Danielle Bisutti
* Claudia Black
* Lauren Bowles
* Katy Boyer
* Ciara Bravo
* Abigail Breslin
* Jason Brooks
* Richard Brooks
* Marcus Brown
* Millie Bobby Brown
* Sterling K. Brown
* Dylan Bruno
* Carlease Burke
* K Callan
* Matt Caplan
* Clare Carey
* Drew Carey
* Enrique Castillo
* Robert Cicchini
* Shelly Cole
* Misha Collins
* Jack Conley
* Erin Cottrell
* Christina Cox
* Jon Cryer
* Brett Cullen
* Merle Dandridge
* Josie Davis
* Catherine Dent
* Michael Des Barres
* Seamus Dever
* Keith Diamond
* Charles Durning
* Meredith Eaton
* Zac Efron
* David Eigenberg
* Chris Ellis
* Mike Erwin
* Al Espinosa
* Nasser Faris
* Sherilyn Fenn
* Alex Fernandez
* Louis Ferreira
* John Finn
* Sheila Frazier
* Jordan Garrett
* Michael Gaston
* Kathleen Gati
* Michael Gilden
* Sarai Givaty
* Iddo Goldberg
* Charles Gómez
* Julie Gonzalo
* Cameron Goodman
* Bruce Gray
* Jason Gray-Stanford
* Scott Grimes
* Gary Grubbs
* Stacy Haiduk
* Colin Hanks
* Melora Hardin
* Marcy Harriell
* Brad Hawkins
* Lance Henriksen
* Sandra Hess
* Torri Higginson
* Stephanie Hodge
* Charlie Hofheimer
* David Hoflin
* Alexandra Holden
* Josh Holloway
* Mark Holton
* Kelly Hu
* Jon Huertas
* Gregory Itzin
* Penny Johnson Jerald
* Anne-Marie Johnson
* Chris J. Johnson
* Vernee Watson-Johnson
* Asante Jones
* Adam Kaufman
* David Keith
* Sheila Kelley
* Alex Kingston
* Chaney Kley
* Eric Allan Kramer
* Jenya Lano
* Fredric Lehne
* Samm Levine
* Christopher Lloyd
* Karina Lombard
* Louise Lombard
* Michael Lowry
* Jamie Luner
* Scott MacDonald
* Vinicius Machado
* Marguerite MacIntyre
* Christopher Maher
* William Mapother
* Matt Malloy
* Jonathan Mangum
* Matthew Marsden
* Mercedes Masohn
* Suleka Mathew
* Merrick McCartha
* Kevin McClatchy
* Tom McCleister
* Gerald McCullouch
* Chris McGarry
* Kate McNeil
* Alex Meneses
* Dina Meyer
* Larry Miller
* James Morrison
* Glenn Morshower
* William R. Moses
* Kieran Mulroney
* Ben Murphy
* Jaime Murray
* Alex Nesic
* Bob Newhart
* Jaime Ray Newman
* Michelle Obama
* Peter Onorati
* Terry O'Quinn
* Erik Palladino
* Robert Patrick
* Amanda Payton
* Elizabeth Peña
* Sofia Pernas
* Paul Perri
* Rick Peters
* Ely Pouget
* Glen Powell
* Lawrence Pressman
* Lindsay Price
* Francesco Quinn
* Dominic Rains
* Ethan Rains
* David Ramsey
* Jim Rash
* Perrey Reeves
* Mercedes Renard
* Terry Rhoads
* Beth Riesgraf
* Leonard Roberts
* Mark Rolston
* Cristine Rose
* John Rosenfeld
* Gena Rowlands
* John Rubinstein
* Betsy Rue
* Tim Russ
* Leon Russom
* Vik Sahay
* Hilary Salvatore
* Susan Santiago
* Sam Sarpong
* Elena Satine
* Doug Savant
* Stelio Savante
* Paul Schulze
* Ashley Scott
* Rodney Scott
* Noah Segan
* Parry Shen
* Jamey Sheridan
* Kent Shocknek
* Christopher Shyer
* Jocko Sims
* Marina Sirtis
* Haaz Sleiman
* Cotter Smith
* Forry Smith
* Nick Spano
* Gina St. John
* Corey Stoll
* Mathew St. Patrick
* Eric Stonestreet
* Tehmina Sunny
* Oleg Taktarov
* Barbara Tarbuck
* Iqbal Theba
* Brian Thompson
* Susanna Thompson
* T. J. Thyne
* Kenneth Tigar
* Noa Tishby
* Lily Tomlin
* Joe Torry
* Connor Trinneer
* Andy Umberger
* Steve Valentine
* Gloria Votsis
* Jonathan Wade-Drahos
* Lindsay Wagner
* Dee Wallace
* Amanda Walsh
* Audrey Wasilewski
* Norbert Weisser
* Michael Welch
* Michael Whaley
* Billy Dee Williams
* Kirk B.R. Woller
* Aloma Wright
* Kathleen York
* Bellamy Young
* Vincent Young
* Kirsten Zien