| 0 | Meyrick / Pla | DeltaWing Racing Cars (USA) | | DeltaWing | LM12 | | Elan | LMP1 |
| 007 | Lamy / Johnson / Dalla Lana | Aston Martin Racing (GB) | David Richards | Aston Martin | V8 Vantage | GTE | Aston Martin | GT |
| 01 | Brabham / Sharp / Cosmo | Extreme Speed Motorsports (USA) | | HPD | ARX-03 | b | HPD | LMP2 |
| 02 | Lazzaro / Brown / Van Overbeek | Extreme Speed Motorsports (USA) | | HPD | ARX-03 | b | HPD | LMP2 |
| 05 | Bennett / Braun / Wilkins | Core Autosport | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 1 | Tréluyer / Fässler / Jarvis | Audi Sport Team Joest (D) | | Audi | R18 | e-tron quattro | Audi | LMP1 |
| 2 | Kristensen / di Grassi / McNish | Audi Sport Team Joest (D) | | Audi | R18 | e-tron quattro | Audi | LMP1 |
| 3 | Garcia / Magnussen / Taylor | Corvette Racing (USA) | Gary Pratt | Chevrolet | Corvette C6 | .R ZR1 | Chevrolet | GT |
| 4 | Gavin / Milner / Westbrook | Corvette Racing (USA) | Gary Pratt | Chevrolet | Corvette C6 | .R ZR1 | Chevrolet | GT |
| 6 | Graf / Luhr / Dumas | Muscle Milk Pickett Racing (USA) | | HPD | ARX-03 | a | HPD | LMP1 |
| 7 | Mitchell / Drissi / Ducote | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 8 | Marcelli / Cumming / Johansson | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 9 | Popow / Junqueira / Ende | RSR Racing | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 10 | Davis / Faieta / Avenatti | Dempsey Del Piero Racing | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 11 | Heylen / Hedlund / Fogarty | JDX Racing | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 12 | Heidfeld / Prost / Jani | Rebellion Racing (CH) | | Lola | B12/60 | | Toyota | LMP1 |
| 13 | Belicchi / Beche / Cheng | Rebellion Racing (CH) | | Lola | B12/60 | | Toyota | LMP1 |
| 16 | Dyson / Smith / Leitzinger | Dyson Racing Team Inc. (USA) | | Lola | B12/60 | | Mazda | LMP1 |
| 17 | Henzler / Sellers / Tandy | Team Falken Tire | | Porsche | 997 GT3 RSR | | Porsche | GT |
| 22 | Bleekemolen / MacNeil / von Moltke | Alex Job Racing | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 23 | Keen / Sweedler / Bell | Team West/AJR/Boardwalk Ferrari | | Ferrari | 458 | Italia GT | Ferrari | GT |
| 27 | Lally / Dempsey / Foster | Dempsey Del Piero Racing | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 30 | Edwards / Cisneros / Seefried | NGT Motorsport | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 31 | Giermaziak / Gomez / Farnbacher | NGT Motorsport | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 41 | Kimber-Smith / Zugel / Lux | Greaves Motorsport (GB) | Jacob Greaves | Zytek | Z11SN | | Nissan | LMP2 |
| 44 | Ehret / Imperatori / Sandberg | Flying Lizard Motorsports | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 45 | Pumpelly / Canache / Wong | Flying Lizard Motorsports | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 48 | Holzer / Miller / Lietz | Paul Miller Racing | | Porsche | 997 GT3 RSR | | Porsche | GT |
| 52 | Ostella / Cheng / Guasch | PR1 Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 55 | Auberlen / Martin / Müller | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GT |
| 56 | Hand / Müller / Edwards | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GT |
| 62 | Bruni / Beretta / Malucelli | Risi Competizione (USA) | | Ferrari | 458 | Italia GT | Ferrari | GT |
| 66 | Keating / Faulkner / Stanton | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 68 | Carter / Estre / de Quesada | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 81 | Kaffer / Schultis / Simon | DragonSpeed Mishumotors | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 91 | Goossens / Dalziel / Farnbacher | SRT Motorsports (USA) | Bill Riley | SRT | Viper | GTS-R | Viper | GT |
| 93 | Kendall / Bomarito / Wittmer | SRT Motorsports (USA) | Bill Riley | SRT | Viper | GTS-R | Viper | GT |
| 97 | Turner / Senna / Mücke | Aston Martin Racing (GB) | David Richards | Aston Martin | V8 Vantage | GTE | Aston Martin | GT |
| 99 | Aschenbach / Calvert-Jones / Curran | Competiton Motorsports | | Porsche | 997 GT3 Cup | | Porsche | GTC |
| 500 | Nunez / Shears / Heinemeier Hansson | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | LMPC |
| 551 | Tucker / Franchitti / Briscoe | Level 5 Motorsports (USA) | Scott Tucker | HPD | ARX-03 | b | HPD | LMP2 |
| 552 | Hunter-Reay / Tucker / Pagenaud | Level 5 Motorsports (USA) | Scott Tucker | HPD | ARX-03 | b | HPD | LMP2 |