2003 24 Hours of Daytona

The 2003 Rolex 24 at Daytona was a Grand-Am Rolex Sports Car Series 24-hour endurance sports car race held on February 1–2, 2003 at the Daytona International Speedway road course.

The race served as the first round of the 2003 Rolex Sports Car Series.

The race saw the debut of the Daytona Prototype as the new top class of the series.

66 Porsche 996 GT3-RS from The Racer's Group, driven by Kevin Buckler, Michael Schrom, Jörg Bergmeister, and Timo Bernhard.

24 Mosler MT900 from Perspective Racing, driven by Jérôme Policand, Michel Neugarten, João Barbosa, and Andy Wallace.