Scott Pilgrim vs. the World is a 2010 romantic action comedy film co-written, produced and directed by Edgar Wright, based on the graphic novel series Scott Pilgrim by Bryan Lee O'Malley. It stars an ensemble cast, with Michael Cera as Scott Pilgrim, a slacker musician who is trying to win a competition to get a record deal, while also battling the seven evil exes of his new girlfriend Ramona Flowers, played by Mary Elizabeth Winstead.

A film adaptation of the comics was proposed following the release of the first volume, and Wright was attached to the project early in development. Filming began in March 2009 in Toronto and wrapped that August. The film premiered after a panel discussion at San Diego Comic-Con on July 22, 2010, and received a wide release in North America on August 13. It was re-released for its 10th anniversary in the United Kingdom on August 21, 2020, and the United States on April 30, 2021.

The film uses famous features of its Toronto setting and matches the style of video game and comic book imagery. It used real musical artists, including Beck and Metric, as a basis for each fictional group in the battle of the bands plot, with some of the actors also performing. A combination of digital and physical methods were used to create the extensive VFX.

Although it was a box-office bomb that failed to recoup its $85 million production budget, Scott Pilgrim vs. the World received positive reviews from critics, who noted its visual style and humor, and garnered a cult following. The film has made several top ten lists and received over 70 awards and nominations. In scholarly analysis, it has been widely discussed as a transmedia narrative.