| 0 | Meyrick / Rojas / Legge | Claro / TracFone DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 007 | Davison / Nielsen / Davis | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 009 | | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 01 | Hand / Pruett / Dixon | 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-03 | b | Honda | P |
| 2 | Van Overbeek / Brown / Fogarty | Tequila Patron ESM (USA) | Scott Sharp | HPD | ARX-03 | b | Honda | P |
| 3 | Garcia / Magnussen / Briscoe | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 4 | Milner / Gavin / Pagenaud | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 5 | Barbosa / Fittipaldi / Bourdais | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 7 | Mayer / Hartley | Starworks Motorsport | | Riley | Mk XXVI | | BMW | P |
| 8 | Popow / van der Zande / Schultis | 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 / Junqueira / Menezes | RSR Racing | | Oreca | FLM 09 | | Chevrolet | PC |
| 16 | Plowman / Drumwright / Drissi / Cheng | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 17 | Henzler / Sellers / Long | Team Falken Tire | | Porsche | 991 RSR | I | Porsche | GTLM |
| 18 | | Muehlner Motorsports America | | Porsche | 991 GT America | | Porsche | GTD |
| 22 | Keen / MacNeil / Davis | 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 | Luhr / Edwards / Klingmann | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GTLM |
| 25 | Farfus / Werner / Auberlen | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GTLM |
| 31 | Cameron / Curran / Papis | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Bleekemolen / Keating / Bleekemolen | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 38 | Daly / Mee / French | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 44 | Lally / Potter / Seefried | Magnus Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 45 | Holzer / Thorne / Thompson | Flying Lizard Motorsports | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 48 | Miller / Haase / von Moltke | Paul Miller Racing | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 49 | Perazzini / Aguas / Cioci / Potolicchio | AF Corse (I) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 50 | Pace / Defoor / Hinton / Schroeder | Fifty Plus Racing | | Riley | Mk XXVI | | BMW | P |
| 52 | Kimber-Smith / Guasch / Palmer | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Braun / Bennett / Gue | Core Autosport | | Oreca | FLM 09 | | Chevrolet | PC |
| 57 | Pla / Krohn / Jönsson | Krohn Racing (USA) | | Ligier | JS P2 | | Judd | P |
| 58 | Heylen / Snow / Valverde | Wright Motorsports | | Porsche | 991 GT America | | Porsche | GTD |
| 60 | Negri / Pew / Wilson | Michael Shank Racing with Curb/Agajanian (USA) | | Ligier | JS P2 | | Honda | P |
| 62 | Bertolini / Kaffer / Fisichella | Risi Competizione (USA) | | Ferrari | 458 | Italia GT | Ferrari | GTLM |
| 63 | Lazzaro / Sweedler / Bell | Scuderia Corsa (USA) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 70 | Nunez / Bomarito / Tremblay | SpeedSource (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 73 | Pumpelly / Lindsey / Norman | Park Place Motorsports | | Porsche | 991 GT America | | Porsche | GTD |
| 81 | Faulkner / Skeen / Avenatti / Giermaziak | GB Autosport | | Porsche | 991 GT America | | Porsche | GTD |
| 85 | Mitchell / Goikhberg / Miller / Kraut | JDC/Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Westbrook / Valiante / Rockenfeller | VisitFlorida.com Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 93 | Keating / Carter / Goossens / Lawrence | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 97 | Said / Palttala / Marsal / Priaulx | Turner Motorsport | | BMW | Z4 | E89 GT3 | BMW | GTD |
| 98 | Lamy / Lauda / Turner / Dalla Lana | Aston Martin Racing (GB) | David Richards | Aston Martin | V8 Vantage | GTE | Aston Martin | GTLM |
| 911 | Pilet / Tandy / Lietz / Bamber | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |
| 912 | Makowiecki / Bergmeister / Bamber / Tandy | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |