| 0 | Meyrick / Legge / Rayhall | Panoz DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 2 | van Overbeek / Sharp / Derani | Tequila Patron ESM (USA) | Scott Sharp | Ligier | JS P2 | | Honda | P |
| 3 | Garcia / Magnussen / Rockenfeller | Corvette Racing (USA) | Gary Pratt | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 4 | Milner / Gavin / Fässler | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 5 | Fittipaldi / Barbosa / Albuquerque | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 6 | Liddell / Davis / Skeen | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 7 | Coletti / Davison / Lall | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 8 | Popow / van der Zande / Heinemeier Hansson | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 9 | Aschenbach / Bell / von Moltke | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 10 | Taylor / Taylor / Angelelli | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 16 | Lewis / Pumpelly / Antinucci | Change Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 20 | Drissi / Yount / Mowlem | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 23 | James / Riberas / Farnbacher | Team Seattle / Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 25 | Farfus / Auberlen / Werner | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 27 | Ruberti / Persiani / Sbirrazzuoli | Dream Racing Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 31 | Cameron / Curran / Pagenaud | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Bleekemolen / Keating / Miller | Riley Motorsports | | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 38 | Koch / French / Marcelli | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 44 | Potter / Lally / Seefried | Magnus Racing (USA) | | Audi | R8 LMS | GT3 | Audi | GTD |
| 48 | Snow / Sellers / Miller | Paul Miller Racing (USA) | Paul Miller | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 52 | Alon / Gutierrez / Kimber-Smith | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 55 | Nunez / Bomarito / Pigot | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 60 | Pla / Pew / Negri | Michael Shank Racing w/Curb-Agajanian (USA) | | Ligier | JS P2 | | Honda | P |
| 62 | Vilander / Fisichella / Calado | Risi Competizione (USA) | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 63 | Nielsen / Balzan / Segal | Scuderia Corsa | | Ferrari | 488 | GT3 | Ferrari | GTD |
| 66 | Hand / Bourdais / Müller | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 67 | Westbrook / Briscoe / Dixon | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 68 | Bertolini / Serra / Pier Guidi | Scuderia Corsa | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 70 | Long / Miller / Pigot | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 73 | McMurry / Bergmeister / Lindsey | Park Place Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 85 | Miller / Goikhberg / Simpson | JDC-Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 88 | Kvamme / Hanratty / Bradley | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Dalziel / Goossens / Hunter-Reay | VisitFlorida Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 96 | Curtis / Freiberg / Klingmann | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 97 | Marsal / Palttala / Lawrence | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 100 | Edwards / Luhr / Wittmer | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 911 | Tandy / Pilet / Lietz | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |
| 912 | Bamber / Makowiecki / Christensen | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |