The 2003 FIA GT Pergusa 500 km was the third round the 2003 FIA GT Championship. It took place at the Autodromo di Pergusa, Italy, on 11 May 2003.
Class winners in bold. Cars failing to complete 70% of winner's distance marked as Not Classified (NC).
| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
|---|---|---|---|---|---|---|---|
| Engine | |||||||
| 1 | GT | 23 |  BMS Scuderia Italia | Matteo Bobbi Thomas Biagi | Ferrari 550-GTS Maranello | 102 | |
| Ferrari 5.9L V12 | |||||||
| 2 | GT | 14 |  Lister Storm Racing | Jamie Campbell-Walter Nathan Kinch | Lister Storm | 102 | |
| Jaguar 7.0L V12 | |||||||
| 3 | GT | 21 | Care Racing BMS Scuderia Italia | Stefano Livio Lilian Bryner Enzo Calderari | Ferrari 550-GTS Maranello | 101 | |
| Ferrari 5.9L V12 | |||||||
| 4 | GT | 6 | Creation Autosportif | Bobby Verdon-Roe Marco Zadra | Lister Storm | 101 | |
| Jaguar 7.0L V12 | |||||||
| 5 | GT | 15 | Lister Storm Racing | Andrea Piccini Jean-Denis Délétraz | Lister Storm | 100 | |
| Jaguar 7.0L V12 | |||||||
| 6 | GT | 4 | Force One Racing Festina |  Philippe Alliot Steve Zacchia | Chrysler Viper GTS-R | 99 | |
| Chrysler 8.0L V10 | |||||||
| 7 | N-GT | 61 | EMKA Racing | Martin Short Tim Sugden | Porsche 911 GT3-R | 99 | |
| Porsche 3.6L Flat-6 | |||||||
| 8 | N-GT | 52 | JMB Racing | Andrea Bertolini Fabrizio de Simone | Ferrari 360 Modena GT | 99 | |
| Ferrari 3.6L V8 | |||||||
| 9 | GT | 8 | Graham Nash Motorsport |  Miguel Ramos Ni Amorim Pedro Chaves | Saleen S7-R | 97 | |
| Ford 7.0L V8 | |||||||
| 10 | N-GT | 75 | Team Eurotech | David Jones Godfrey Jones | Porsche 911 GT3-R | 97 | |
| Porsche 3.6L Flat-6 | |||||||
| 11 | GT | 18 |  Zwaan's Racing | Arjan van der Zwaan Rob van der Zwaan Klaus Abbelen | Chrysler Viper GTS-R | 96 | |
| Chrysler 8.0L V10 | |||||||
| 12 | N-GT | 77 | RWS Yukos Motorsport |  Nikolai Fomenko Alexey Vasilyev | Porsche 911 GT3-RS | 95 | |
| Porsche 3.6L Flat-6 | |||||||
| 13 | N-GT | 56 |  Alda Motorsport | Andrzej Dziurka Wojciech Dobrzanski | Porsche 911 GT3-RS | 95 | |
| Porsche 3.6L Flat-6 | |||||||
| 14 | N-GT | 53 | JMB Racing | Antoine Gosse Peter Kutemann | Ferrari 360 Modena N-GT | 94 | |
| Ferrari 3.6L V8 | |||||||
| 15 | N-GT | 88 | Team Maranello Concessionaires | Tim Mullen Jamie Davies | Ferrari 360 Modena GT | 84 | |
| Ferrari 3.6L V8 | |||||||
| 16 | N-GT | 89 | Team Maranello Concessionaires | Darren Turner Kelvin Burt | Ferrari 360 Modena N-GT | 81 | |
| Ferrari 3.6L V8 | |||||||
| 17 DNF | GT | 2 | Konrad Motorsport |  Franz Konrad Toni Seiler Jean-Marc Gounon | Saleen S7-R | 65 | |
| Ford 7.0L V8 | |||||||
| 18 DNF | N-GT | 58 | Auto Palace Compétition | Steeve Hiesse Guillaume Gomez | Ferrari 360 Modena GT | 45 | |
| Ferrari 3.6L V8 | |||||||
| 19 DNF | N-GT | 74 | Team Eurotech | Mike Jordan Mark Sumpter | Porsche 911 GT3-RS | 45 | |
| Porsche 3.6L Flat-6 | |||||||
| 20 DNF | GT | 9 | JMB Racing | Philipp Peter Fabio Babini | Ferrari 550 Maranello | 41 | |
| Ferrari 6.0L V12 | |||||||
| 21 DNF | N-GT | 51 | Freisinger Motorsport |  Bert Longin Gabriele Gardel | Porsche 911 GT3-RS | 40 | |
| Porsche 3.6L Flat-6 | |||||||
| 22 DNF | N-GT | 57 |  MenX | Tomáš Enge Robert Pergl | Ferrari 360 Modena GT | 39 | |
| Ferrari 3.6L V8 | |||||||
| 23 DNF | N-GT | 99 | RWS Yukos Motorsport | Walter Lechner, Jr. Stéphane Daoudi | Porsche 911 GT3-R | 23 | |
| Porsche 3.6L Flat-6 | |||||||
| 24 DNF | GT | 16 | Wieth Racing | Wolfgang Kaufmann Niko Wieth Vittorio Zoboli | Ferrari 550 Maranello | 18 | |
| Ferrari 6.0L V12 | |||||||
| 25 DNF | N-GT | 50 | Freisinger Motorsport | Marc Lieb Stéphane Ortelli | Porsche 911 GT3-RS | 16 | |
| Porsche 3.6L Flat-6 | |||||||
| 26 DNF | GT | 10 | JMB Racing | Boris Derichebourg David Terrien Christian Pescatori | Ferrari 550 Maranello | 14 | |
| Ferrari 6.0L V12 | |||||||
| 27 DNF | GT | 11 |  Roos Optima Racing Team | Henrik Roos Magnus Wallinder | Chrysler Viper GTS-R | 11 | |
| Chrysler 8.0L V10 | |||||||
| 28 DNF | GT | 12 | Proton Competition | Christian Ried Gerold Ried | Porsche 911 GT2 | 10 | |
| Porsche 3.6L Turbo Flat-6 | |||||||
| 29 DNF | GT | 5 | Force One Racing Festina Carsport Holland | Mike Hezemans Anthony Kumpen | Chrysler Viper GTS-R | 5 | |
| Chrysler 8.0L V10 | |||||||
| DSQ† | GT | 22 | BMS Scuderia Italia | Fabrizio Gollin Luca Cappellari | Ferrari 550-GTS Maranello | 102 | |
| Ferrari 5.9L V12 | |||||||
| DNS | GT | 7 | Graham Nash Motorsport | Mike Newton Thomas Erdos | Saleen S7-R | - | |
| Ford 7.0L V8 |
† - #22 BMS Scuderia Italia was disqualified for failing post-race technical inspection. The car was found to have an airbox which allowed air to leak back out.