| 0 | Meyrick / Rojas / Legge / Chaves | Claro / TracFone DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 007 | Davison / Nielsen / Nygaard / Davis | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 009 | DeBoer / Riddle / Salazar / Wilson / Davis | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 01 | Pruett / Hand / Kimball / Karam | Chip Ganassi Racing with Felix Sabates | | Riley | Mk XXVI | | Ford | P |
| 02 | Dixon / Kanaan / Larson / McMurray | Chip Ganassi Racing with Felix Sabates | | Riley | Mk XXVI | | Ford | P |
| 07 | Long / Miller / Devlin / Tremblay | SpeedSource (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 1 | Dalziel / Sharp / Heinemeier Hansson | Tequila Patron ESM (USA) | Scott Sharp | HPD | ARX-04 | b | Honda | P |
| 2 | Fogarty / Brown / Van Overbeek | Tequila Patron ESM (USA) | Scott Sharp | HPD | ARX-04 | b | Honda | P |
| 3 | Magnussen / Garcia / Briscoe | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 4 | Gavin / Milner / Pagenaud | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 5 | Barbosa / Fittipaldi / Bourdais | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 7 | Barrichello / Hartley / Hunter-Reay / Graves / Mayer | Starworks Motorsport | | Riley | Mk XXVI | | BMW | P |
| 8 | van der Zande / Schultis / Popow / Hedlund / Albuquerque | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 10 | Taylor / Taylor / Angelelli | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 11 | Cumming / Hawksworth / Junqueira / Menezes | RSR Racing | | Oreca | FLM 09 | | Chevrolet | PC |
| 16 | Mowlem / Papadopoulos / Drissi / Alder / Plowman | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 17 | Sellers / Henzler / Long | Team Falken Tire | | Porsche | 991 RSR | I | Porsche | GTLM |
| 18 | Basseng / Beretta / O'Young / De Phillippi / Mayr-Melnhof | Muehlner Motorsports America | | Porsche | 991 GT America | | Porsche | GTD |
| 19 | De Phillippi / Michaelian / Lira / Flores / Mayr-Melnhof | Muehlner Motorsports America | | Porsche | 991 GT America | | Porsche | GTD |
| 22 | Keen / MacNeil / Davis / Van Gisbergen | Alex Job Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 23 | James / Riberas / Farnbacher | Team Seattle/Alex Job Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 24 | Edwards / Luhr / Klingmann / Rahal | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GTLM |
| 25 | Farfus / Auberlen / Werner / Spengler | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GTLM |
| 28 | Zöchling / Bachler / Engelhart / Willsey / Ineichen | Konrad Motorsport | | Porsche | 991 GT America | | Porsche | GTD |
| 31 | Papis / Cameron / Curran / Keen | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Bleekemolen / Keating / Carter / Goossens / Bleekemolen | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 38 | French / Mee / Vance / Johnston | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 44 | Lally / Potter / Seefried / Ragginger | Magnus Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 45 | Winkelhock / Thorne / Hoshino / Fujii | Flying Lizard Motorsports | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 48 | Haase / Miller / von Moltke / Rast | Paul Miller Racing | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 49 | Griffin / Lathouras / Rugolo / Aguas | AF Corse (I) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 50 | Pace / Defoor / Hinton / Schroeder / Smith | Fifty Plus Racing Endures for a Cure, Inc. / Highway to Help Race Team | | Riley | Mk XXVI | | BMW | P |
| 51 | Bruni / Perrodo / Collard / Vilander | AF Corse (I) | Amato Ferrari | Ferrari | 458 | Italia GT | Ferrari | GTLM |
| 52 | Kimber-Smith / Guasch / Novich / Palmer | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Braun / Bennett / Wilkins / Gue | Core Autosport | | Oreca | FLM 09 | | Chevrolet | PC |
| 57 | Pla / Krohn / Jönsson / Brundle | Krohn Racing (USA) | | Ligier | JS P2 | | Judd | P |
| 58 | Heylen / Eng / Snow / Dempsey | Wright Motorsports | | Porsche | 991 GT America | | Porsche | GTD |
| 60 | Negri / McMurry / Pew / Allmendinger | Michael Shank Racing w/ Curb/Agajanian (USA) | | Ligier | JS P2 | | Honda | P |
| 61 | Plowman / Drumwright / Breukers / Blackstock / Ruscitti | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 62 | Kaffer / Rigon / Fisichella / Beretta | Risi Competizione (USA) | | Ferrari | 458 | Italia GT | Ferrari | GTLM |
| 63 | Bell / Sweedler / Lazzaro / Segal / Westphal | Scuderia Corsa (USA) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 64 | Bertolini / Serra / Longo / Gomes | Scuderia Corsa (USA) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 66 | Lewis / Gewirtz / Kvamme / Cheng | RG Racing | | Riley | Mk XXVI | | BMW | P |
| 70 | Bomarito / Nunez / Hinchcliffe / Tremblay | SpeedSource (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 73 | Pumpelly / Lindsey / Norman / Canache / Estre | Park Place Motorsports | | Porsche | 991 GT America | | Porsche | GTD |
| 81 | Faulkner / Giermaziak / Skeen / Butcher / Avenatti | GB Autosport | | Porsche | 991 GT America | | Porsche | GTD |
| 85 | Simpson / Goikhberg / Miller / Vautier / Mitchell | JDC/Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Westbrook / Valiante / Rockenfeller / Cosmo | VisitFlorida.com Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 93 | Keating / Farnbacher / Carter / Wittmer / Lawrence | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 97 | Palttala / Marsal / Priaulx / Said | Turner Motorsport | | BMW | Z4 | E89 GT3 | BMW | GTD |
| 98 | Lamy / Lauda / Turner / Dalla Lana / Mücke | Aston Martin Racing (GB) | David Richards | Aston Martin | V8 Vantage | GTE | Aston Martin | GTLM |
| 911 | Tandy / Pilet / Lieb / Christensen | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |
| 912 | Makowiecki / Bergmeister / Bamber / Christensen | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |