| 0 | Meyrick / Legge / Rayhall / Wirth | Panoz DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 007 | Davison / Creel / Pérez / Pérez de Lara / Viljoen | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 01 | Wurz / Stroll / 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 | Derani / Sharp / Brown / Van Overbeek | Tequila Patrón ESM (USA) | Scott Sharp | Ligier | JS P2 | | Honda | P |
| 3 | Magnussen / Garcia / 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 | Barbosa / Fittipaldi / 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 | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 9 | von Moltke / Habul / Said / Vautier | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 10 | Taylor / Taylor / Angelelli / Barrichello | 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 | Grala / Pumpelly / Lewis / Marks | Change Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 20 | Mowlem / Drissi / Drumwright / Vera / Gaughan | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 21 | Busnelli / Michaelian / Toussaint / Willsey | Konrad Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 22 | Keen / MacNeil / MacNeil / 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 / Werner / Auberlen / Spengler | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 26 | Eversley / Merzon / Yount / Lewis / Falb | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 28 | Basseng / Ineichen / Konrad / Willsey / Babini | Konrad Motorsport (D) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 30 | Müller / Stippler / Abbelen / Huisman / Schmitz | Frikadelli Racing (D) | | Porsche | 991 GT3 R | | Porsche | GTD |
| 31 | Curran / Cameron / Pagenaud / Adam | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Bleekemolen / Keating / Farnbacher / Miller | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 37 | Aleshin / Minassian / Mediani / Ladygin | SMP Racing (RUS) | | BR | 01 | | Nissan | P |
| 38 | French / Norman / Norman / Gdovic | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 44 | Lally / Potter / Seefried / Rast | Magnus Racing (USA) | | Audi | R8 LMS | GT3 | Audi | GTD |
| 45 | Krohn / Kaffer / Jönsson / Haase | Flying Lizard Motorsports | | Audi | R8 LMS | ultra | Audi | GTD |
| 48 | Miller / Bortolotti / Sellers / Snow | Paul Miller Racing (USA) | Paul Miller | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 50 | Schroeder / Defoor / Hinton / Grüber / Pace | Highway to Help | | Riley | Mk XXVI | | BMW | P |
| 51 | Giammaria / Mann / Cressoni / Cioci | Spirit of Race | | Ferrari | 458 | Italia GT3 | Ferrari | GTD |
| 52 | Kimber-Smith / Alon / Gutierrez / Boulle | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Bennett / Braun / Wilkins / Plowman | Core Autosport | | Oreca | FLM 09 | | Chevrolet | PC |
| 55 | Nunez / Bomarito / Pigot | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 60 | Negri / Pew / Allmendinger / Pla | Michael Shank Racing w/Curb-Agajanian (USA) | | Ligier | JS P2 | | Honda | P |
| 62 | Vilander / Fisichella / Rigon / Beretta | Risi Competizione (USA) | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 63 | Segal / Nielsen / Balzan / Renauer | Scuderia Corsa (USA) | | 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 | Long / Miller / Devlin | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 72 | Bruni / Bertolini / Shaytar / Calado | SMP Racing | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 73 | McMurry / Lindsey / Siedler / Bergmeister | Park Place Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 85 | Simpson / Miller / Goikhberg / Koch | JDC-Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 88 | Johnston / Kvamme / Rosenqvist | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Dalziel / Goossens / Hunter-Reay | VisitFlorida Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 93 | Faulkner / Keating / Robinson / Mosing / Foss | Riley Motorsports | | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 96 | Curtis / Freiberg / Klingmann / Wittmann | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 97 | Krohn / Palttala / Marsal / Martin | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 98 | Stanaway / Dalla Lana / Lamy / Lauda | Aston Martin Racing | | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 100 | Edwards / Luhr / 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 | Tandy / Pilet / Estre | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |
| 912 | Makowiecki / Bamber / Christensen | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |