Tenet is a 2020 science fiction action thriller film written and directed by Christopher Nolan, who also produced it with his wife Emma Thomas. A co-production between the United Kingdom and the United States, it stars John David Washington, Robert Pattinson, Elizabeth Debicki, Dimple Kapadia, Michael Caine, and Kenneth Branagh. The film follows a former CIA agent who is recruited into a secret organization, tasked with tracing the origin of objects that are traveling backwards through time and their connection to an attack from the future to the present. Nolan continued his relationship with Warner Bros. and his production company Syncopy for the film's production and distribution.

Nolan took over five years to write the screenplay after deliberating about Tenet's central ideas for more than a decade. Pre-production began in late 2018, casting took place in March 2019, and principal photography lasted six months, from May to November, in Denmark, Estonia, India, Italy, Norway, the United Kingdom, and the United States. Cinematographer Hoyte van Hoytema shot on 65 mm film and IMAX. After delays due to the COVID-19 pandemic, Tenet was released in the United Kingdom on August 26, 2020, and in the United States on September 3, 2020, in IMAX, 35 mm, and 70 mm.

It was the first Hollywood tent-pole to open in theaters during the pandemic and grossed $365 million worldwide against a $200 million budget, making it the fifth-highest-grossing film of 2020 despite failing to break even. The film received positive reviews from critics and was nominated in two categories at the 93rd Academy Awards, winning Best Visual Effects. Tenet also received other accolades including Best Special Visual Effects at the 74th British Academy Film Awards.

Since its release, the film has gained a cult following amongst science fiction enthusiasts and Nolan's fanbase.