| 2 | Sharp / Dalziel / Derani | Tequila Patron ESM | Scott Sharp | Nissan | Onroak DPi | | Nissan | 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 | Barbosa / Albuquerque / Fittipaldi | Mustang Sampling Racing | | Cadillac | DPi-V.R | | Cadillac | P |
| 8 | Keating / Falb / Rayhall / Wickens / Ruscitti | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 10 | Taylor / Taylor / Angelelli / Gordon | Wayne Taylor Racing (USA) | Wayne Taylor | Cadillac | DPi-V.R | | Cadillac | P |
| 11 | Bortolotti / Engelhart / Ineichen / Pérez Companc | GRT Grasser Racing Team (A) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 13 | Jani / Buemi / Heidfeld / Sarrazin | Rebellion Racing (CH) | Bart Hayden | Oreca | 07 | | Gibson | P |
| 14 | Pruett / James / Menezes / Karam | 3GT Racing | | Lexus | RC F | GT3 | Lexus | GTD |
| 15 | Hawksworth / Alon / Cindric / Farnbacher | 3GT Racing | | Lexus | RC F | GT3 | Lexus | GTD |
| 16 | Mul / Sandberg / Grala / Piquet, Jr. | Change Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 18 | Massari / Brisebois / Claman / Anassis | DAC Motorsports | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 19 | Farfus / Auberlen / Sims / Spengler | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 20 | Yount / Yacaman / Ducote / Kvamme / Rice | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 21 | Mapelli / Stolz / Willsey / Konrad | Konrad Motorsport (D) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 22 | Brown / Van Overbeek / Senna | Tequila Patron ESM | Scott Sharp | Nissan | Onroak DPi | | Nissan | P |
| 23 | Kaffer / Sweedler / Bell / Montecalvo | Alex Job Racing | | Audi | R8 LMS | GT3 | Audi | GTD |
| 24 | Edwards / Tomczyk / Catsburg / Wittmer | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 26 | Boulle / Merzon / Yount / Hindman / Mowlem / Ducote / Papadopoulos | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 27 | DeGeorge / Giammaria / Sbirrazzuoli / Ruberti / Persiani | Dream Racing Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 28 | Pumpelly / de Quesada / de Quesada / Morad / Lazare / Christensen | Alegra Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 29 | Schmidt / De Phillippi / Mies / Gounon | Montaplast by Land-Motorsport (D) | | Audi | R8 LMS | GT3 | Audi | GTD |
| 31 | Curran / Cameron / Conway / Morris | Whelen Engineering Racing (USA) | | Cadillac | DPi-V.R | | Cadillac | P |
| 33 | Keating / Bleekemolen / Farnbacher / Christensen | Riley Motorsports - Team AMG | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 38 | O'Ward / Masson / Toppe / French | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 46 | Busnelli / Babini | Ebimotors (I) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 48 | Sellers / Snow / Miller / Caldarelli | Paul Miller Racing (USA) | Paul Miller | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 50 | Jeannette / Jäger / Van Gisbergen / Bleekemolen / MacNeil | Riley Motorsports - WeatherTech Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 51 | Mann / Mediani / Rigon | Spirit of Race (CH) | | Ferrari | 488 | GT3 | Ferrari | GTD |
| 52 | Gutierrez / Guasch / Kimber-Smith / Enerson | PR1/Mathiasen Motorsports | | Ligier | JS P217 | | Gibson | P |
| 54 | Bennett / Braun / Jönsson / Long | Core Autosport | | Porsche | 991 GT3 R | | Porsche | GTD |
| 55 | Nunez / Bomarito / Pigot / Devlin | Mazda Motorsports | | Mazda | RT24-P | | Mazda | P |
| 57 | Aschenbach / Davis / Bell / Liddell | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 59 | Smith / Reimer / Renger / Proczyk / Müller | Manthey Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 61 | Engelhart / Ineichen / Lenz / Pampanini / Pavlovic | GRT Grasser Racing Team (A) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 62 | Vilander / Fisichella | Risi Competizione (USA) | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 63 | Nielsen / Balzan / Cressoni | Scuderia Corsa | | Ferrari | 488 | GT3 | Ferrari | GTD |
| 66 | Hand / Müller / Bourdais | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 67 | Briscoe / Westbrook / Dixon | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 68 | Johnson / Mücke / Pla | Ford Chip Ganassi Team UK (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 69 | Priaulx / Kanaan / Tincknell | Ford Chip Ganassi Team UK (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 70 | Long / Miller / Hinchcliffe / Devlin | Mazda Motorsports | | Mazda | RT24-P | | Mazda | P |
| 73 | McMurry / Lindsey / Bergmeister | Park Place Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 75 | Habul / Said / Vautier | SunEnergy1 Racing | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 81 | Hedman / Lapierre / Hanley / Duval | DragonSpeed (USA) | Elton Julian | Oreca | 07 | | Gibson | P |
| 85 | Goikhberg / Miller / Simpson / Beche | JDC-Miller Motorsports | | Oreca | 07 | | Gibson | P |
| 86 | Segal / Negri / Dyer / Hunter-Reay | Michael Shank Racing (USA) | Michael Shank | Acura | NSX | GT3 | Acura | GTD |
| 88 | Saavedra / Mayer / Dayson | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | van der Zande / Goossens / Rast | VisitFlorida Racing | | Riley | Mk.30 | | Gibson | P |
| 93 | Lally / Legge / Wilkins / Rahal | Michael Shank Racing (USA) | Michael Shank | Acura | NSX | GT3 | Acura | GTD |
| 97 | Jens Klingmann | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 98 | Dalla Lana / Lauda / Lamy / Sørensen | Aston Martin Racing | | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 911 | Pilet / Werner / Makowiecki | Porsche GT Team (USA) | Jon Bennett | Porsche | 991 RSR | II | Porsche | GTLM |
| 912 | Estre / Vanthoor / Lietz | Porsche GT Team (USA) | Jon Bennett | Porsche | 991 RSR | II | Porsche | GTLM |
| 991 | Creel / Henzler / Heylen / Sanchez / Hedlund | TRG (USA) | Kevin Buckler | Porsche | 991 GT3 R | | Porsche | GTD |