Star Trek: Section 31 is a 2025 American science fiction television film directed by Olatunde Osunsanmi and written by Craig Sweeny for the streaming service Paramount+. It is the first television film, and the fourteenth film overall, in the Star Trek franchise and part of executive producer Alex Kurtzman's expanded Star Trek Universe. A spin-off from the series Star Trek: Discovery, the film is set in the franchise's "lost era" between the Star Trek: The Original Series films and the series Star Trek: The Next Generation. It follows Philippa Georgiou as she works with Section 31, a secret division of Starfleet tasked with protecting the United Federation of Planets, and must face the sins of her past.

Michelle Yeoh stars as Georgiou, reprising her role from Discovery. Development on a spin-off series with Yeoh was confirmed in January 2019, but production was delayed by the COVID-19 pandemic. A different Discovery spin-off series, Star Trek: Strange New Worlds, was then prioritized. Section 31 was redeveloped into a film, which was announced in April 2023. Omari Hardwick, Sam Richardson, Robert Kazinsky, Kacey Rohl, Sven Ruygrok, James Hiroyuki Liao, Humberly González, and Joe Pingue also star. Filming took place in Toronto, Canada, from January to March 2024. The film was produced by CBS Studios in association with Secret Hideout, Action This Day!, and Roddenberry Entertainment.

Star Trek: Section 31 was released on Paramount+ on January 24, 2025. It received mostly negative reviews from critics and was considered by some to be the worst entry in the Star Trek franchise.