Mark Harmon has become synonymous with Leroy Jethro Gibbs after playing him on NCIS for 19 seasons, so it's hard to imagine ...

Mark Harmon got a lot of mileage out of playing Leroy Jethro Gibbs in CBS’ hit series NCIS, but why did he leave the show? Harmon played the lead role, who oversees the NCIS team, for 18 seasons.

NCIS showrunners didn’t hesitate when casting young Gibbs in NCIS. One star instantly embodied the role, making the choice ...

Jamie Lee Curtis reveals her favorite NCIS scene, which features her character Dr. Samantha Ryan and Mark Harmon's Leroy ...

Origins has been taking fans back to the ‘90s pre-NCIS to follow a young Leroy Jethro Gibbs, played by Austin Stowell. The show, which is now airing amid the 2025 TV schedule, has already offered ...

For many of those years, he worked alongside Mark Harmon, with their characters, Leon Vance and Leroy Jethro Gibbs, frequently butting heads. Following Harmon’s departure from NCIS, Gary Cole ...

“I would say that at this point, this pertains more to Gibbs than to me, that I’ve got some very trusty voices in my head right now — one of them being Mark Harmon, who’s been a sage to me ...

Mark Harmon captained the flagship NCIS for 18 years. Cast as Special Agent in Charge, Leroy Jethro Gibbs, Mark helmed the series from 2003 to 2021, banking an impressive salary per episode.

Over the years, the show has seen incredible performances from its ensemble cast, including Mark Harmon as Leroy Jethro Gibbs, David McCallum, Pauley Perrette, Michael Weatherly, and Sean Murray.