Jaime Alguersuari (pronounced Heimi Al-gay-shuari; born March 23, 1990 in Barcelona), is a Spanish racing driver.

Alguersuari began his formula racing career in 2005. In 2006, he won the Italian Formula Renault Winter Series, before finishing as runner-up to Mika Mäki in the main championship the following year. He moved up to the British Formula Three Championship for 2008, driving for the Carlin Motorsport alongside team-mates Brendon Hartley, Oliver Turvey and Sam Abay. After a season-long battle between Alguersuari, Hartley, Turvey and Sergio Pérez, Alguersuari won the final three races of the season to clinch the championship. He thus became the youngest title winner in championship history, aged 18 years and 203 days. He also deputised for the injured Mark Webber in the 2008 Race of Champions event at the Wembley Stadium in December 2008.