Alien: Romulus is a 2024 science fiction horror film directed by Fede Álvarez and written by Álvarez and Rodo Sayagues. Produced by Scott Free Productions and Brandywine Productions, it is part of the Alien franchise, set between the events of Alien (1979) and Aliens (1986). The film stars Cailee Spaeny, David Jonsson, Archie Renaux, Isabela Merced, Spike Fearn, and Aileen Wu as six downtrodden young space colonists who encounter hostile creatures while scavenging a derelict space station.

At CinemaCon in April 2019, 20th Century Fox announced plans to produce future Alien films. Álvarez was attached as director in March 2022, and Spaeny joined as the lead later that year. Filming took place from March to July 2023.

Alien: Romulus premiered in Los Angeles on August 12, 2024, and was theatrically released in the United States by 20th Century Studios on August 16. The film grossed $350.9 million worldwide and received positive reviews. It has received several industry nominations, namely for its technical aspects, including an Academy Award nomination for Best Visual Effects. A sequel is in development.