| 0 | Meyrick / Legge / Rayhall / Wirth | Panoz DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 007 | Creel / Pérez / Pérez de Lara / Pérez / Viljoen | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 01 | Stroll / Wurz / Hartley / Priaulx | Ford Chip Ganassi Racing | | Riley | Mk XXVI | | Ford | P |
| 02 | Dixon / Kanaan / McMurray / Larson | Ford Chip Ganassi Racing | | Riley | Mk XXVI | | Ford | P |
| 2 | Sharp / Brown / Van Overbeek / Derani | Tequila Patrón 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 | Gavin / Fässler / Milner | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 5 | Fittipaldi / Barbosa / Albuquerque / Pruett | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 6 | Davis / Liddell / Aschenbach / Bell | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 8 | van der Zande / Popow / Cumming / Hawksworth | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 9 | Said / Habul / von Moltke / Vautier | 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 |
| 11 | Bell / Sweedler / Piscopo / Antinucci | O'Gara Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 16 | Pumpelly / Lewis / Marks / Grala / Cindric | Change Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 20 | Drumwright / Mowlem / Alder / Auer | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 21 | Busnelli / Michaelian / Grala | Konrad Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 22 | MacNeil / MacNeil / Keen / Van Gisbergen / Jeannette | Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 23 | James / Riberas / Farnbacher / Henzler | Team Seattle / Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 25 | Farfus / Auberlen / Werner / Spengler | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 26 | Merzon / Eversley / Yount / Yacaman | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 28 | Ineichen / Willsey / Konrad / Babini / Basseng | Konrad Motorsport (D) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 30 | Stippler / Abbelen / Huisman / De Phillippi / Müller | Frikadelli Racing (D) | | Porsche | 991 GT3 R | | Porsche | GTD |
| 31 | Curran / Cameron / Pagenaud / Adam | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Keating / Bleekemolen / Farnbacher / Miller | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 37 | Minassian / Mediani / Aleshin / Ladygin | SMP Racing | | BR | 01 | | Nissan | P |
| 38 | French / Norman / Norman / Gdovic | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 44 | Potter / Lally / Seefried / Rast | Magnus Racing (USA) | | Audi | R8 LMS | GT3 | Audi | GTD |
| 45 | Kaffer / Jönsson / Haase / Krohn | Flying Lizard Motorsports | | Audi | R8 LMS | ultra | Audi | GTD |
| 48 | Bortolotti / Miller / Sellers / Snow | Paul Miller Racing (USA) | Paul Miller | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 50 | Defoor / Schroeder / Hinton / Grüber / Pace | Highway to Help | | Riley | Mk XXVI | | BMW | P |
| 51 | Mann / Giammaria / Cressoni / Cioci | Spirit of Race | | Ferrari | 458 | Italia GT3 | Ferrari | GTD |
| 52 | Alon / Kimber-Smith / Gutierrez / Boulle | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Bennett / Braun / Wilkins / Plowman | Core Autosport | | Oreca | FLM 09 | | Chevrolet | PC |
| 55 | Bomarito / Nunez / Pigot | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 60 | Pew / Negri / Allmendinger / Pla | Michael Shank Racing W/Curb-Agajanian (USA) | | Ligier | JS P2 | | Honda | P |
| 63 | Nielsen / Balzan / Segal / Renauer | Scuderia Corsa | | Ferrari | 458 | Italia GT3 | Ferrari | GTD |
| 66 | Hand / Bourdais / Müller | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 67 | Briscoe / Westbrook / Mücke | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 68 | Pier Guidi / Prémat / Serra / Rojas | Scuderia Corsa | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 70 | Miller / Long / Devlin | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 72 | Bertolini / Shaytar / Bruni / Calado | SMP Racing | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 73 | McMurry / Lindsey / Bergmeister | Park Place Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 85 | Miller / Goikhberg / Koch / Simpson | JDC-Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 88 | Kvamme / Johnston / Engel / Rosenqvist | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Dalziel / Goossens / Hunter-Reay | VisitFlorida Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 93 | Keating / Robinson / Mosing / Foss / Faulkner | Riley Motorsports | | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 96 | Curtis / Freiberg / Klingmann / Wittmann | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 97 | Marsal / Krohn / Palttala / Martin | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 98 | Dalla Lana / Lamy / Lauda / Stanaway | Aston Martin Racing | | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 100 | Luhr / Edwards / Wittmer / Rahal | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 540 | Pappas / Pilgrim / Catsburg / Long | Black Swan Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 911 | Pilet / Tandy / Estre | 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 |