| 0 | Meyrick / Legge / Rayhall | Panoz DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 2 | Derani / Sharp / Brown / Van Overbeek | 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 | Milner / Gavin / Fässler | 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 / De Phillippi | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 8 | van der Zande / Popow / Heinemeier Hansson | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 9 | Aschenbach / Bell / von Moltke | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 10 | Barrichello / Taylor / Taylor / Angelelli | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 11 | Sweedler / Bell / Antinucci | Change Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 16 | Pumpelly / Lewis / Carter | Change Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 20 | Mowlem / Lewis / Drumwright / Yount | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 21 | Zöchling / Ehret / Krebs | Konrad Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 22 | Keen / MacNeil / Jeannette | Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 23 | Riberas / Farnbacher / James | Team Seattle / Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 24 | Morad / de Quesada / Lawrence / Farnbacher | Alegra Motorsports | | Riley | Mk XXVI | | BMW | P |
| 25 | Auberlen / Werner / Spengler | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 27 | Babini / Ruberti / Sbirrazzuoli / Persiani | Dream Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 28 | Brück / Borcheller / Konrad / Webster | Konrad Motorsport (D) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 31 | Curran / Cameron / Pruett | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Bleekemolen / Keating / Miller | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 38 | French / Marcelli / Norman | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 44 | Potter / Lally / Seefried | Magnus Racing (USA) | | Audi | R8 LMS | GT3 | Audi | GTD |
| 45 | Kaffer / Krohn / Jönsson | Flying Lizard Motorsports | | Audi | R8 LMS | ultra | Audi | GTD |
| 48 | Miller / Sellers / Snow | Paul Miller Racing (USA) | Paul Miller | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 50 | Pace / Defoor / Hinton / Schroeder | Highway to Help | | Riley | Mk XXVI | | BMW | P |
| 51 | Giammaria / Cressoni / Mann | Spirit of Race | | Ferrari | 458 | Italia GT3 | Ferrari | GTD |
| 52 | Kimber-Smith / Gutierrez / Alon | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Bennett / Braun / Wilkins | Core Autosport | | 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 / Rigon | Risi Competizione (USA) | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 63 | Segal / Nielsen / Balzan | 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 / Devlin / Ihara | Mazda Motorsports (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 73 | McMurry / Lindsey / Bergmeister / Heylen | Park Place Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 81 | Minassian / Hedman / Lapierre | DragonSpeed (USA) | | Oreca | 05 | | Nissan | P |
| 85 | Goikhberg / Miller / Simpson / Koch | JDC-Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 88 | Johnston / Lyons / Engel | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Goossens / Dalziel / Hunter-Reay | VisitFlorida Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 96 | Curtis / Freiberg / Klingmann | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 97 | Krohn / Palttala / Marsal | 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 | Edwards / Luhr / Wittmer | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 540 | Pappas / Catsburg / Long / Pilgrim | 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 | Makowiecki / Bamber / Christensen | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |