De 24 uur van Daytona 2003 was de 41e editie van deze endurancerace. De race werd verreden op 1 en 2 februari 2003 op de Daytona International Speedway nabij Daytona Beach, Florida.
De race werd gewonnen door de The Racer's Group #66 van Kevin Buckler, Michael Schrom, Timo Bernhard en Jörg Bergmeister, die allemaal hun eerste Daytona-zege behaalden. De DP-klasse werd gewonnen door de Multimatic #88 van Scott Maxwell, David Brabham en David Empringham. De SRP II-klasse werd gewonnen door de Team Seattle/Essex Racing #5 van Ross Bentley, Don Kitch jr., Joe Pruskowski en Justin Pruskowski. De GTS-klasse werd gewonnen door de Perspective Racing #24 van Jérôme Policand, João Barbosa, Michel Neugarten en Andy Wallace.
Race Winnaars in hun klasse zijn vetgedrukt.
Pos. Klasse No. Team Coureurs Chassis Banden Ronden Motor 1 GT 66 The Racer's Group Kevin Buckler Michael Schrom Timo Bernhard Jörg Bergmeister Porsche 996 GT3-RS 695 Porsche 3.6 L Flat-6 2 GT 35 Risi Competizione Ralf Kelleners Anthony Lazzaro Johnny Mowlem Ferrari 360 Modena GT 686 Ferrari 3.6 L V8 3 GT 83 Rennwerks Motorsports David Murry Dave Standridge Johannes van Overbeek Richard Steranka Porsche 996 GT3-R 684 Porsche 3.6 L Flat-6 4 DP 88 Multimatic Scott Maxwell David Brabham David Empringham Multimatic MDP1 679 Ford 5.0 L V8 5 DP 59 Brumos Racing J. C. France Hurley Haywood Scott Goodyear Scott Sharp Fabcar FDSC/03 661 Porsche 3.6 L Flat-6 6 GT 43 Orbit Racing Peter Baron Leo Hindery Marc Lieb Kyle Petty Porsche 996 GT3-RS 656 Porsche 3.6 L Flat-6 7 SRP II 5 Team Seattle/Essex Racing Ross Bentley Don Kitch jr. Joe Pruskowski Justin Pruskowski Lola B2K/40 652 Nissan 3.0 L V6 8 SRP II 15 Team Seattle/Essex Racing Wade Gaughran Steve Gorriaran Peter MacLeod Dave Gaylord Lola B2K/40 648 Nissan 3.0 L V6 9 GTS 24 Perspective Racing Jérôme Policand João Barbosa Michel Neugarten Andy Wallace Mosler MT900 R 641 Chevrolet 5.7 L V8 10 GTS 46 Morgan-Dollar Motorsports Charles Morgan Lance Norick Jim Pace Rob Morgan Chevrolet Corvette 639 Chevrolet 5.5 L V8 11 GT 34 Ferri Comeptizione Mauro Baldi Justin Keen Eric van de Poele Ryan Hampton Ferrari 360 Modena GT 638 Ferrari 3.6 L V8 12 GTS 31 Rollcentre Racing Richard Stanton Rob Barff Andy Britnell Rick Sutherland Mosler MT900 R 635 Chevrolet 5.7 L V8 13 GT 69 Marcus Racing Brian Cunningham Hugh Plumb Cory Friedman Craig Stanton BMW M3 633 BMW 3.2 L I6 14 GT 20 JMB Racing Augusto Farfus Emmanuel Collard Max Papis Andrea Garbagnati Ferrari 360 Modena 621 Ferrari 3.6 L V8 15 GTS 30 Rollcentre Racing Martin Short Tom Herridge John Burton David Shep Mosler MT900 R 601 Chevrolet 5.7 L V8 16 GTS 7 Konrad Motorsport Franz Konrad Toni Seiler Airton Daré Jean-François Yvon Saleen S7-R 600 Ford 6.0 L V8 17 GT 49 Pit Bull/MAC Racing Bepo Orlandi Michele Merendino Derek Clark Ron Atapattu Porsche 996 GT3-RS 595 Porsche 3.6 L Flat-6 DNF SRP II 21 Archangel Motorsport Services Larry Oberto Chris Bingham Derrike Cope Brian DeVries Lola B2K/40 589 Nissan 3.0 L V6 19 GT 44 Orbit Racing Mike Fitzgerald Manuel Matos Joe Policastro Joe Policastro jr. Porsche 996 GT3-RS 566 Porsche 3.6 L Flat-6 DNF SRP II 97 Lucchini Engineering Mirko Savoldi Piergiuseppe Peroni Filippo Francioni Lucchini SR2002 548 Nissan 3.0 L V6 21 GTS 09 Flis Motorsports Doug Goad Paul Menard Paul Mears jr. Jim Briody Chevrolet Corvette 542 Chevrolet 6.2 L V8 DNF GT 68 The Racer's Group Jim Michaelian R. J. Valentine Tom Hessert jr. Tom Hessert III Porsche 996 GT3-R 501 Porsche 3.6 L Flat-6 DNF GT 03 Marcos USA Cor Euser Rob Knook Donny Crevels Peter van der Kolk Marcos Mantis Plus 465 Ford 4.6 L V8 24 DP 8 G&W Motorsports Dieter Quester Boris Said Darren Law Luca Riccitelli Picchio DP2 451 BMW 4.9 L V8 DNF DP 3 Cegwa Sport Darius Grala Oswaldo Negri jr. Josh Rehm Guy Cosmo Fabcar FDSC/03 403 Toyota 4.3 L V8 DNF GTS 19 ACP Motorsports Anthony Puleo Kerry Hitt Robert Dubler Mark Kennedy Chevrolet Corvette 391 Chevrolet 6.1 L V8 DNF GTS 05 RE/MAX Racing Craig Conway John Metcalf Rick Carelli Dave Linger Chevrolet Corvette 378 Chevrolet 6.2 L V8 DNF GTS 77 RWS Motorsport Aleksej Vasiljev Tetsuya Tanaka Nikolai Fomenko Walter Lechner jr. Porsche 996 GT3-R 361 Porsche 3.6 L Flat-6 DNF GT 99 NETTTS Racing Jim Hamblin Barry Brensinger James Nelson Mark Greenberg Porsche 996 GT3-RS 316 Porsche 3.6 L Flat-6 DNF GTS 40 Derhaag Motorsports Justin Bell Derek Bell Ken Wilden Simon Gregg Chevrolet Corvette 260 Chevrolet 6.1 L V8 DNF GT 33 Scuderia Ferrari of Washington Cort Wagner Brent Martini Sylvain Tremblay Selby Wellman Ferrari 360 Modena GT 214 Ferrari 3.6 L V8 DNF GT 73 Graham Nash Motorsport Rob Wilson Mike Newton David Gooding Martyn Konig Porsche 996 GT3-R 211 Porsche 3.6 L Flat-6 DNF GT 10 MAC Racing David Terrien Gianluca de Lorenzi Didier Moinel Delalande Marco Saviozzi Porsche 996 GT3-R 206 Porsche 3.6 L Flat-6 DNF DP 58 Brumos Racing David Donohue Mike Borkowski Randy Pobst Chris Bye Fabcar FDSC/03 160 Porsche 3.6 L Flat-6 DNF GT 67 The Racer's Group Andrew Davis Robert Julian Tom Nastasi Dave Lacey Porsche 996 GT3-RS 151 Porsche 3.6 L Flat-6 DNF GT 98 Schumacher Racing Sascha Maassen Martin Snow Lucas Luhr Larry Schumacher Porsche 996 GT3-RS 135 Porsche 3.6 L Flat-6 DNF SRP II 80 G&W Motorsports Shawn Bayliff Steve Marshall Robert Prilika Andy Lally Picchio D-USA 121 BMW 3.0 L I6 DNF GT 57 Seikel Motorsport Alex Caffi Gabrio Rosa Fabio Rosa Andrea Chiesa Porsche 996 GT3-RS 101 Porsche 3.6 L Flat-6 DNF DP 54 Bell Motorsports Didier Theys Forest Barber Terry Borcheller Christian Fittipaldi Doran JE4 67 Chevrolet 5.5 L V8 DNF GT 22 JMB Racing Stephen Earle Philip Shearer Stéphane Grégoire Ludovico Manfredi Ferrari 360 Modena 54 Ferrari 3.6 L V8 DNF GTS 48 Heritage Motorsports Tommy Riggins David Machavern Kevin Lepage Scott Lagasse Ford Mustang 49 Ford 5.9 L V8 DNF GTS 18 Boston Motorsports Group Ken Stiver Scott Deware Don Bell Jeff Kline Mosler MT900 R 14 Chevrolet 5.7 L V8 DNF GTS 6 Gunnar Racing Gunnar Jeannette Duncan Dayton Peter Kitchak Ronald Zitza Porsche 911 GT1 9 Porsche 3.6 L Flat-6 DNF GTS 51 Proton Competition Mauro Casadei Christian Reid Gerold Reid Manfred Jurasz Porsche 911 GT2 2 Porsche 3.6 L Turbo Flat-6 DNS GT 61 System Force Motorsports Peter van Merksteijn sr. Charles Brugman Frans Munsterhuis Cougar Jacobsen Porsche 996 GT3-RS 0 Porsche 3.6 L Flat-6
2003 Daytona