| 0 | Meyrick / Legge / Rayhall | Panoz DeltaWing Racing (USA) | | DeltaWing | DWC13 | | Elan | P |
| 2 | Sharp / Van Overbeek / Brown / Derani | Tequila Patrón ESM (USA) | Scott Sharp | Ligier | JS P2 | | Honda | P |
| 5 | Fittipaldi / Barbosa / Albuquerque | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 6 | Liddell / Davis / De Phillippi | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 9 | Aschenbach / Bell / von Moltke | Stevenson Motorsports | | Audi | R8 LMS | GT3 | Audi | GTD |
| 10 | Taylor / Taylor / Angelelli / Barrichello | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 20 | Mowlem / Drumwright / Drissi | BAR1 Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 21 | Konrad / Borcheller / Avemarg | Konrad Motorsport | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 22 | MacNeil / Keen / Jeannette | Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 23 | James / Riberas / Farnbacher | Team Seattle / Alex Job Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 24 | de Quesada / Johnson / Morad | Alegra Motorsports | | Riley | Mk XXVI | | BMW | P |
| 25 | Auberlen / Werner / Edwards / Luhr / Wittmer | BMW Team RLL (USA) | | BMW | M6 | F13 GTLM | BMW | GTLM |
| 27 | DeGeorge / Sbirrazzuoli / Ruberti / Babini | Dream Racing | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 28 | Konrad / Brück | Konrad Motorsport (D) | | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 31 | Curran / Cameron / Pruett | Action Express Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 33 | Keating / Bleekemolen / Miller | Riley Motorsports (USA) | Bill Riley | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 44 | Potter / Lally / Seefried | Magnus Racing (USA) | | Audi | R8 LMS | GT3 | Audi | GTD |
| 48 | Sellers / Snow / Miller | Paul Miller Racing (USA) | Paul Miller | Lamborghini | Huracán | GT3 | Lamborghini | GTD |
| 50 | Defoor / Schroeder / Hinton / Pace | Highway to Help | | Riley | Mk XXVI | | BMW | P |
| 51 | Mann / Giammaria / Cressoni | Spirit of Race | | Ferrari | 458 | Italia GT3 | Ferrari | GTD |
| 52 | Alon / Kimber-Smith / Gutierrez | PR1/Mathiasen Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 54 | Bennett / Braun / Wilkins | Core Autosport | | Oreca | FLM 09 | | Chevrolet | PC |
| 60 | Pew / Negri / Pla | Michael Shank Racing w/Curb-Agajanian (USA) | | Ligier | JS P2 | | Honda | P |
| 62 | Vilander / Rigon | Risi Competizione (USA) | | Ferrari | 488 | GTE | Ferrari | GTLM |
| 63 | Nielsen / Balzan / Segal | 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 | Briscoe / Westbrook / Dixon | Ford Chip Ganassi Racing (USA) | Chip Ganassi | Ford | GT | LM GTE | Ford | GTLM |
| 73 | McMurry / Lindsey | Park Place Motorsports | | Porsche | 991 GT3 R | | Porsche | GTD |
| 81 | Hedman / Lapierre / Minassian | DragonSpeed (USA) | | Oreca | 05 | | Nissan | P |
| 85 | Miller / Goikhberg / Simpson / Koch | JDC-Miller Motorsports | | Oreca | FLM 09 | | Chevrolet | PC |
| 90 | Dalziel / Goossens | VisitFlorida Racing | | Chevrolet | Corvette DP | | Chevrolet | P |
| 93 | Keating / Bleekemolen / Miller | Riley Motorsports | | Dodge | Viper | SRT GT3-R | Viper | GTD |
| 96 | Curtis / Freiberg / Klingmann | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 97 | Marsal / Palttala | Turner Motorsport | | BMW | M6 | F13 GT3 | BMW | GTD |
| 540 | Pappas / Catsburg / Pilgrim | Black Swan Racing | | Porsche | 991 GT3 R | | Porsche | GTD |
| 911 | Pilet / Makowiecki | Porsche North America (USA) | Jon Bennett | Porsche | 991 RSR | I | Porsche | GTLM |