| 007 | Turner / Enge / Kiesa | Aston Martin Racing (GB) | David Richards | Aston Martin | DBR9 | | Aston Martin | GT1 |
| 009 | Lamy / Sarrazin / Bright | Aston Martin Racing (GB) | David Richards | Aston Martin | DBR9 | | Aston Martin | GT1 |
| 1 | Biela / Werner / *Pirro | Audi Sport North America (D) | | Audi | R10 TDI | | Audi | LMP1 |
| 2 | Capello / Kristensen / McNish | Audi Sport North America (D) | | Audi | R10 TDI | | Audi | LMP1 |
| 3 | Fellows / O'Connell / Papis | Corvette Racing (USA) | | Chevrolet | Corvette C6 | .R Z06 | Chevrolet | GT1 |
| 4 | Gavin / Beretta / Magnussen | Corvette Racing (USA) | | Chevrolet | Corvette C6 | .R Z06 | Chevrolet | GT1 |
| 6 | Maassen / Collard / Luhr | Penske Motorsports (USA) | Roger Penske | Porsche | RS Spyder | | Porsche | LMP2 |
| 7 | Bernhard / Dumas / Long | Penske Motorsports (USA) | Roger Penske | Porsche | RS Spyder | | Porsche | LMP2 |
| 8 | Cosmo / Bach / Matos | B-K Motorsports (USA) | | Courage | C65 | | Mazda | LMP2 |
| 9 | Dayton / Fisken / Knoop | Highcroft Racing | | Lola | EX257 | | AER | LMP1 |
| 10 | Lally / Gue / *Davis | Miracle Motorsports (USA) | | Courage | C65 | | AER | LMP2 |
| 12 | Lewis / McMurry / Willman | Autocon Motorsports (USA) | | Lola | EX257 | | AER | LMP1 |
| 16 | Weaver / Leitzinger / Wallace | Dyson Racing Team | | Lola | B06/10 | | AER | LMP1 |
| 20 | Smith / Dyson | Dyson Racing Team | | Lola | B06/10 | | AER | LMP1 |
| 21 | Auberlen / Hand / James | BMW Team PTG (USA) | | BMW | M3 | E46 GTR | BMW | GT2 |
| 22 | Marks / Sellers / Jensen | BMW Team PTG (USA) | | BMW | M3 | E46 GTR | BMW | GT2 |
| 23 | Rockenfeller / Graf / Rahal | Alex Job Racing (USA) | Alex Job | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 25 | Belloc / Weickardt / Borcheller | Konrad Motorsports | | Saleen | S7-R | | Ford | GT1 |
| 26 | Ruberti / Babini / Davies | Konrad Motorsports (D) | Franz Konrad | Saleen | S7-R | | Ford | GT1 |
| 31 | Bergmeister / Bergmeister / Jönsson | Petersen/White Lightning (USA) | | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 33 | Vergers / Barazi / Julian | Barazi Epsilon (F) | | Courage | C65 | | AER | LMP2 |
| 37 | Field / Field / Halliday | Intersport Racing | Jon Field | Lola | B05/40 | | AER | LMP2 |
| 41 | Binnie / Timpany / Sutherland | Binnie Motorsports (USA) | William Binnie | Lola | B05/40 | -42 | Zytek | LMP2 |
| 44 | Law / Neiman / Pechnik | Flying Lizard Motorsports | | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 45 | Lieb / Fogarty / Van Overbeek | Flying Lizard Motorsports | | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 50 | Maxwell / Brabham / Bourdais | Multimatic Motorsports Team Panoz (CDN) | | Panoz | Esperante | GTLM | Ford | GT2 |
| 51 | Jeannette / Milner / Junqueira | Multimatic Motorsports Team Panoz | | Panoz | Esperante | GTLM | Ford | GT2 |
| 55 | Farnbacher / Ehret / Nielsen | Farnbacher Loles Racing (D) | | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 56 | Vonka / Casadei / McCormick | Vonka Racing (CZ) | Jan Vonka | Porsche | 996 GT3-R | | Porsche | GT2 |
| 62 | Melo / Kelleners / Lazzaro | Risi Competizione (USA) | | Ferrari | F430 | GTC | Ferrari | GT2 |
| 78 | Pumpelly / Thornton / Patterson | J3 Racing (USA) | | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 79 | Sugden / Henzler / Matthews | J3 Racing | | Porsche | 996 GT3-RS | | Porsche | GT2 |
| 80 | Dean / Tomlinson / Kimber-Smith | Team LNT | | Panoz | Esperante | GTLM | Ford | GT2 |
| 85 | Kox / Crevels | Spyker Squadron (NL) | | Spyker | C8 Spyder GT2R | | Audi | GT2 |
| 86 | Bleekemolen / Hezemans | Spyker Squadron (NL) | | Spyker | C8 Spyder GT2R | | Audi | GT2 |