Mission: Impossible – Dead Reckoning Part One is a 2023 American action spy film directed by Christopher McQuarrie from a screenplay he co-wrote with Erik Jendresen. It is the sequel to Mission: Impossible – Fallout (2018) and the seventh installment in the Mission: Impossible film series. It stars Tom Cruise as Ethan Hunt, alongside an ensemble cast including Hayley Atwell, Ving Rhames, Simon Pegg, Rebecca Ferguson, Vanessa Kirby, Esai Morales, Pom Klementieff, Mariela Garriga and Henry Czerny. In the film, Hunt and his IMF team face off against the Entity, a powerful rogue AI.

In January 2019, Cruise announced the next two Mission: Impossible films would be shot back-to-back, with McQuarrie writing and directing both. Returning and new cast members were announced soon after, and Lorne Balfe, who composed the score for Fallout, returned to score. Filming began in Italy in February 2020 but was halted by the COVID-19 pandemic. It resumed later that year and wrapped in September 2021, with other filming locations including Norway, the United Kingdom and the United Arab Emirates. With an estimated budget of $291 million, it is one of the most expensive films ever made.

Dead Reckoning Part One premiered in Rome on June 19, 2023, and was theatrically released in the United States on July 12, by Paramount Pictures. The film received critical acclaim and grossed $571.1 million worldwide. Despite being the tenth-highest-grossing film of 2023, its overall budget and competition from the "Barbenheimer" phenomenon resulted in the film becoming a box-office disappointment. Dead Reckoning Part One was nominated in two categories at the 96th Academy Awards and the 77th British Academy Film Awards. A sequel, Mission: Impossible – The Final Reckoning, is scheduled for release in May 2025.