The 2004 FIA GT Brno 500 km was the fifth round the 2004 FIA GT Championship season. It took place at the Brno Circuit, Czech Republic, on May 30, 2004.
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 | 5 |  Vitaphone Racing Team Konrad Motorsport | Michael Bartels Uwe Alzen | Saleen S7-R | 87 | |
| Ford 7.0L V8 | |||||||
| 2 | GT | 17 |  JMB Racing |  Karl Wendlinger Jaime Melo | Ferrari 575-GTC Maranello | 87 | |
| Ferrari 6.0L V12 | |||||||
| 3 | GT | 2 |  BMS Scuderia Italia | Fabrizio Gollin Luca Cappellari | Ferrari 550-GTS Maranello | 87 | |
| Ferrari 5.9L V12 | |||||||
| 4 | GT | 11 | G.P.C. Giesse Squadra Corse | Philipp Peter Fabio Babini | Ferrari 575-GTC Maranello | 86 | |
| Ferrari 6.0L V12 | |||||||
| 5 | GT | 27 |  Creation Autosportif | Jamie Campbell-Walter Jamie Derbyshire | Lister Storm | 86 | |
| Jaguar 7.0L V12 | |||||||
| 6 | GT | 4 | Konrad Motorsport | Franz Konrad Harald Becker Toni Seiler | Saleen S7-R | 86 | |
| Ford 7.0L V8 | |||||||
| 7 | GT | 3 | Care Racing Developments BMS Scuderia Italia | Stefano Livio Enzo Calderari Lilian Bryner | Ferrari 550-GTS Maranello | 85 | |
| Ferrari 5.9L V12 | |||||||
| 8 | GT | 18 | JMB Racing | Ian Khan Bert Longin Robert Lechner | Ferrari 575-GTC Maranello | 85 | |
| Ferrari 6.0L V12 | |||||||
| 9 | GT | 10 |  Zwaans GTR Racing Team | Stéphane Lemeret Henrik Roos Arjan van der Zwaan | Chrysler Viper GTS-R | 85 | |
| Chrysler 8.0L V10 | |||||||
| 10 | N-GT | 62 | G.P.C. Giesse Squadra Corse | Fabrizio de Simone Christian Pescatori | Ferrari 360 Modena GTC | 85 | |
| Ferrari 3.6L V8 | |||||||
| 11 | GT | 28 | Graham Nash Motorsport | Paolo Ruberti Gabriele Lancieri Anthony Kumpen | Saleen S7-R | 85 | |
| Ford 7.0L V8 | |||||||
| 12 | N-GT | 99 | Freisinger Motorsport | Sascha Maassen Lucas Luhr | Porsche 911 GT3-RSR | 85 | |
| Porsche 3.6L Flat-6 | |||||||
| 13 | N-GT | 50 | Yukos Freisinger Motorsport |  Emmanuel Collard Stéphane Ortelli | Porsche 911 GT3-RSR | 85 | |
| Porsche 3.6L Flat-6 | |||||||
| 14 | GT | 1 | BMS Scuderia Italia | Matteo Bobbi Gabriele Gardel | Ferrari 550-GTS Maranello | 84 | |
| Ferrari 5.9L V12 | |||||||
| 15 | GT | 7 | Ray Mallock Ltd. | Mike Newton Thomas Erdos | Saleen S7-R | 84 | |
| Ford 7.0L V8 | |||||||
| 16 | GT | 8 | Ray Mallock Ltd. | Chris Goodwin Miguel Ramos | Saleen S7-R | 83 | |
| Ford 7.0L V8 | |||||||
| 17 | N-GT | 77 | Yukos Freisinger Motorsport |  Nikolai Fomenko Alexey Vasilyev | Porsche 911 GT3-RSR | 83 | |
| Porsche 3.6L Flat-6 | |||||||
| 18 | GT | 19 | JMB | Stéphane Daoudi Antoine Gosse Peter Kutemann | Ferrari 575-GTC Maranello | 82 | |
| Ferrari 6.0L V12 | |||||||
| 19 | N-GT | 69 | Proton Competition | Gerold Ried Christian Ried | Porsche 911 GT3-RS | 80 | |
| Porsche 3.6L Flat-6 | |||||||
| 20 | N-GT | 57 |  Vonka Racing | Jan Vonka Miro Konopka | Porsche 911 GT3-R | 79 | |
| Porsche 3.6L Flat-6 | |||||||
| 21 | N-GT | 63 | JVG Racing | Horst Felbermayr, Sr. Horst Felbermayr, Jr. | Porsche 911 GT3-RS | 78 | |
| Porsche 3.6L Flat-6 | |||||||
| 22 | N-GT | 60 | Machánek Racing | Jaroslav Hozník Rudolf Machánek | Porsche 911 GT3-RSR | 76 | |
| Porsche 3.6L Flat-6 | |||||||
| 23 DNF | N-GT | 61 | Machánek Racing | Josef Venc Istvan Racz | Porsche 911 GT3-RS | 50 | |
| Porsche 3.6L Flat-6 | |||||||
| 24 DNF | GT | 13 | G.P.C. Giesse Squadra Corse | Emanuele Naspetti Mike Hezemans | Ferrari 575-GTC Maranello | 41 | |
| Ferrari 6.0L V12 | |||||||
| 22 DNF | GT | 9 | Zwaans GTR Racing Team | Klaus Abbelen Val Hillebrand Rob van der Zwaan | Chrysler Viper GTS-R | 6 | |
| Chrysler 8.0L V10 |