NCIS has had a diverse range of guest appearances, featuring iconic comedians such as Bob Newhart and Drew Carey, along with film stars like Jesse Plemons and Colin Hanks. Beloved sitcom actors like Jaleel White and Danica McKellar have also left their mark on the show, while The Big Bang Theory’s Kunal Nayyar and Keith Carradine ventured into the NCIS universe. Suits’ Patrick J Adams took on a role as a murderer, and Jon Cryer from Two and a Half Men portrayed a Navy doctor.
Notable additions include Stranger Things’ Millie Bobby Brown and Lord of the Rings’ Sean Astin, each bringing their unique twists to NCIS episodes. The show has even welcomed athletes like Deontay Wilder and Carl Weathers. From comedy legends to famous athletes, NCIS boasts an impressive lineup of surprising guest stars across its various series.