Phantom Thread is a 2017 American historical drama film written and directed by Paul Thomas Anderson, and starring Daniel Day-Lewis, Vicky Krieps and Lesley Manville. Set in 1950s London, it stars Day-Lewis as an haute couture dressmaker who takes a young waitress, played by Krieps, as his muse. It marked Day-Lewis's final film role to date. The film is the first Anderson film shot outside the United States, with principal photography beginning in January 2017 in Lythe, England. It is Anderson's second collaboration with Day-Lewis, following There Will Be Blood (2007), and his fourth with composer Jonny Greenwood.

Phantom Thread premiered in New York City on December 11, 2017, and was theatrically released in the United States on December 25, 2017. The film received acclaim for its acting, screenplay, direction, musical score, costume design, and production values. It was chosen by the National Board of Review as one of the top ten films of 2017, and is considered one of the best films of the 2010s.

At the 90th Academy Awards, the film was nominated for Best Picture, Best Director, Best Actor for Day-Lewis, Best Supporting Actress for Lesley Manville and Best Original Score, and won for Best Costume Design. It also earned four nominations at the 71st British Academy Film Awards, winning for Best Costume Design, and received two Golden Globe nominations.