| 0 | Legge / Meyrick / Chaves | DeltaWing Racing Cars (USA) | | DeltaWing | DWC13 | | Elan | P |
| 007 | Davison / Nielsen / Block | TRG-AMR (USA) | Kevin Buckler | Aston Martin | V12 Vantage | GT3 | Aston Martin | GTD |
| 01 | Rojas / Pruett / Dixon | Chip Ganassi Racing with Felix Sabates | | Riley | Mk XXVI | | Ford | P |
| 07 | Nunez / Miller / Vautier | SpeedSource (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 08 | Hawksworth / Cumming / Mitchell | RSR Racing | | Oreca | FLM 09 | | Chevrolet | PC |
| 09 | Ende / Heinemeier Hansson / Junqueira | RSR Racing | | Oreca | FLM 09 | | Chevrolet | PC |
| 3 | Garcia / Magnussen / Briscoe | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 4 | Milner / Gavin / Briscoe | Corvette Racing (USA) | | Chevrolet | Corvette C7 | .R | Chevrolet | GTLM |
| 5 | Barbosa / Fittipaldi / Bourdais | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 7 | Fuentes / Martin / Merzon / *Eversley | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 8 | van der Zande / Schultis / Popow | Starworks Motorsport | | Oreca | FLM 09 | | Chevrolet | PC |
| 9 | Frisselle / Frisselle / Fogarty | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 10 | Taylor / Taylor / Angelelli | Konica Minolta Chevrolet Corvette Dallara for Wayne Taylor Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 17 | Sellers / Henzler / Holzer | Team Falken Tire | | Porsche | 991 RSR | I | Porsche | GTLM |
| 18 | | Muehlner Motorsports America | | Porsche | 991 GT America | | Porsche | GTD |
| 19 | Kvamme / Lloyd / Pegram | Muehlner Motorsports America | | Porsche | 991 GT America | | Porsche | GTD |
| 22 | Keen / MacNeil / Stanton | Alex Job Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 23 | James / Riberas / Farnbacher | Team Seattle/Alex Job Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 25 | Lux / Rayhall / Kimber-Smith | 8Star Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 27 | Davis / Dempsey / Foster | Dempsey Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 30 | Nielsen / Giermaziak / Bamber | MOMO / NGT Motorsport | | Porsche | 991 GT America | | Porsche | GTD |
| 31 | Said / Curran / Papis | Marsh Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Bleekemolen / Keating / Bleekemolen | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 35 | Neiman / von Moltke / Latif | Flying Lizard Motorsports | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 38 | Ostella / French / Mee | Performance Tech Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 42 | Brundle / Yacaman / Tung | OAK Racing (F) | | Ligier | JS P2 | | Honda | P |
| 44 | Potter / Lally / Seefried | Magnus Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 45 | Canache / Pumpelly / Palmer | Flying Lizard Motorsports | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 46 | Putman / Espenlaub | Fall-Line Motorsports | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 48 | Miller / Haase / Bell | Paul Miller Racing | | Audi | R8 LMS | Grand-Am | Audi | GTD |
| 49 | Perazzini / Cheever / Cioci | Spirit of Race | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 51 | Griffin / Lathouras / Rugolo | Spirit of Race | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 52 | Jeannette / Montecalvo | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Braun / Bennett / Gue | Core Autosport | | Oreca | FLM 09 | | Chevrolet | PC |
| 55 | Auberlen / Priaulx / Hand | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GTLM |
| 56 | Edwards / Müller / Werner | BMW Team RLL (USA) | | BMW | Z4 | GTE | BMW | GTLM |
| 57 | Bertolini / Krohn / Jönsson | Krohn Racing | | Ferrari | 458 | Italia GT | Ferrari | GTLM |
| 58 | Heylen / Snow / Dempsey | Snow Racing | | Porsche | 991 GT America | | Porsche | GTD |
| 60 | Negri / Pew | Michael Shank Racing with Curb/Agajanian | | Riley | Mk XXVI | | Ford | P |
| 62 | Kaffer / Fisichella / Beretta | Risi Competizione (USA) | | Ferrari | 458 | Italia GT | Ferrari | GTLM |
| 63 | Balzan / Westphal / Davis / *Marcelli | Scuderia Corsa (USA) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 64 | | Scuderia Corsa (USA) | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 70 | Tremblay / Long / Devlin | SpeedSource (USA) | Sylvain Tremblay | Mazda | Prototype | | Mazda | P |
| 71 | Lindsey / Estre | Park Place Motorsports | | Porsche | 991 GT America | | Porsche | GTD |
| 73 | Lindsey / Estre / Siedler / *Skeen | Park Place Motorsports | | Porsche | 991 GT America | | Porsche | GTD |
| 81 | Faulkner / Barker / Eng | GB Autosport | | Porsche | 991 GT America | | Porsche | GTD |
| 85 | Miller / Simpson / Goikhberg | JDC/Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 87 | Plowman / Drumwright / Drissi | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 88 | Mowlem / Papadopoulos / Cheng | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Rockenfeller / Westbrook / Valiante | visitflorida.com Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 91 | Wittmer / Goossens / Hunter-Reay | SRT Motorsports (USA) | | Dodge | Viper | SRT GTS-R | Viper | GTLM |
| 93 | Bomarito / Farnbacher / Bell | SRT Motorsports (USA) | | Dodge | Viper | SRT GTS-R | Viper | GTLM |
| 94 | Palttala / Cameron / Nygaard | Turner Motorsport | | BMW | Z4 | E89 GT3 | BMW | GTD |
| 555 | Bell / Sweedler / Grunewald | AIM Autosport | | Ferrari | 458 | Italia Grand-Am | Ferrari | GTD |
| 911 | Tandy / Bergmeister / Pilet | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |
| 912 | Christensen / Long / Bamber | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |