| 01 | Bourdais / van der Zande / Dixon | Cadillac Racing (USA) | Chip Ganassi | Cadillac | V-Series.R | | Cadillac | GTP |
| 02 | Bamber / Lynn / Westbrook | Cadillac Racing (USA) | Chip Ganassi | Cadillac | V-Series.R | | Cadillac | GTP |
| 023 | Triarsi / Scardina / Rovera / Bertolini | Triarsi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 04 | Kurtz / Hanley / McMurry / Gutierrez | Crowdstrike Racing by APR (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 1 | Sellers / Snow / Lewis / Martin | Paul Miller Racing (USA) | | BMW | M4 | G82 GT3 | BMW | GTD |
| 3 | Garcia / Taylor / Milner | Corvette Racing (USA) | | Chevrolet | Corvette C8 | .R GTD | Chevrolet | GTD Pro |
| 6 | Jaminet / Tandy / Cameron | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 7 | Campbell / Nasr / Christensen | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 8 | Farano / McLaughlin / Newgarden / Simpson | Tower Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 9 | Bachler / Pilet / Vanthoor | Pfaff Motorsports (CDN) | | Porsche | 992 GT3 R | I | Porsche | GTD Pro |
| 10 | Taylor / Albuquerque / Deletraz / Hartley | Konica Minolta Acura ARX-06 (USA) | | Acura | ARX-06 | | Acura | GTP |
| 11 | Thomas / Jensen / Huffaker / VeeKay | TDS Racing (F) | | Oreca | 07 | | Gibson | LMP2 |
| 12 | Telitz / Montecalvo / Kirkwood / Thompson | VasserSullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD |
| 13 | Fidani / Bell / Kern / Kranz | AWA (CDN) | Andrew Wojteczko | Duqueine | D08 | | Nissan | LMP3 |
| 14 | Hawksworth / Barnicoat / Conway | Vasser Sullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD Pro |
| 16 | Hardwick / Heylen / Robichon / Olsen | Wright Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 17 | Mantella / Boyd / Varrone / Merrill | AWA (CDN) | Andrew Wojteczko | Duqueine | D08 | | Nissan | LMP3 |
| 18 | Merriman / Dalziel / Rasmussen / Jarvis | Era Motorsport (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 19 | Giammaria / Perera / Schiavoni / Ineichen | Iron Lynx (I) | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 20 | Andersen / Jones / Fjordbach / Marciello | High Class Racing (DK) | | Oreca | 07 | | Gibson | LMP2 |
| 21 | Mann / Pérez Companc / Molina / Castellacci | AF Corse (I) | Amato Ferrari | Ferrari | 296 | GT3 | Ferrari | GTD |
| 23 | Gunn / Riberas / Pittard | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD Pro |
| 24 | Eng / Farfus / Wittmann / Herta | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 25 | De Phillippi / Yelloly / van der Linde / Herta | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 27 | de Angelis / Sørensen / James / Turner | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD |
| 31 | Derani / Sims / Aitken | Whelen Engineering Racing Cadillac V-LMDh (USA) | Bob Johnson | Cadillac | V-Series.R | | Cadillac | GTP |
| 32 | Skeen / Grenier / Koch / Götz | Team Korthoff Motorsports (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 33 | Willsey / Barbosa / Pino / Soufi | Sean Creech Motorsport (USA) | | Ligier | JS P320 | | Nissan | LMP3 |
| 35 | Heriau / Van Der Garde / Pierson / van Uitert | TDS Racing (F) | | Oreca | 07 | | Gibson | LMP2 |
| 36 | Andretti / Chaves / Dickerson / Lindh | Andretti Autosport (USA) | Michael Andretti | Ligier | JS P320 | | Nissan | LMP3 |
| 38 | DeAngelis / Allen / Bloum / Shields | Performance Tech Motorsports (USA) | | Ligier | JS P320 | | Nissan | LMP3 |
| 42 | Yount / Conwright / Li / Deledda | NTE Sport (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 43 | Alvarez / Frost / de Oliveira / French | MRS GT-Racing (D) | | Ligier | JS P320 | | Nissan | LMP3 |
| 44 | Potter / Lally / Pumpelly / Thiim | Magnus Racing (USA) | | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD |
| 47 | Lacorte / Sernagiotto / Fuoco / Balzan | Cetilar Racing (I) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 51 | Lux / DeFrancesco / Cindric / Fittipaldi | Rick Ware Racing (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 52 | Keating / Chatin / Quinn / Lapierre | PR1 Mathiasen Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 53 | Kvamme / Estep / Magnussen / Hart | MDK Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 55 | Poordad / Pizzi / Allen / Bruni | Proton Competition (D) | | Oreca | 07 | | Gibson | LMP2 |
| 57 | Ward / Ellis / Dontje / Auer | Winward Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 60 | Blomqvist / Braun / Castroneves / Pagenaud | Meyer Shank Racing w/ Curb Agajanian (USA) | | Acura | ARX-06 | | Acura | GTP |
| 62 | Pier Guidi / Calado / Serra / Rigon | Risi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD Pro |
| 63 | Caldarelli / Bortolotti / Pepper / Grosjean | Iron Lynx (I) | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD Pro |
| 64 | Giovanis / Plumb / Plumb / Trinkler | TGM/TF Sport (GB) | | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD Pro |
| 66 | Monk / Legge / Farnbacher / Miller | Gradient Racing (USA) | | Acura | NSX | GT3 | Acura | GTD |
| 70 | Iribe / Schandorff / Millroy / Kirchhöfer | Inception Racing (GB) | | McLaren | 720S | GT3 | McLaren | GTD |
| 74 | Robinson / Fraga / Burdon / van Berlo | Riley (USA) | | Ligier | JS P320 | | Nissan | LMP3 |
| 75 | Habul / Stolz / Schiller / Jefferies | Sun Energy 1 (AUS) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 77 | Brynjolfsson / Hindman / Root / Estre | Wright Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 78 | Goikhberg / Spinelli / Hites / Mapelli | US RaceTronics (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 79 | MacNeil / Juncadella / Gounon / Engel | WeatherTech Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD Pro |
| 80 | Hyett / Priaulx / Jeannette / Tincknell | AO Racing (USA) | Gunnar Jeannette | Porsche | 992 GT3 R | I | Porsche | GTD |
| 83 | Frey / Bovy / Pin / Gatting | Iron Dames (I) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 85 | Bechtolsheimer / van der Helm / Mars / Filippi | JDC Miller MotorSports (USA) | | Duqueine | D08 | | Nissan | LMP3 |
| 87 | Kanamaru / Serravalle / Boulle / Vance | FastMD Racing (USA) | | Duqueine | D08 | | Nissan | LMP3 |
| 88 | Perrodo / Vaxiviere / Canal / Nielsen | AF Corse (I) | | Oreca | 07 | | Gibson | LMP2 |
| 91 | Metni / van Berlo / Evans / Andlauer | Kellymoss with Riley (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 92 | Brule / Udell / Davis / Bleekemolen | Kellymoss with Riley (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 93 | Harrison / Formal / Marcelli / Briscoe | Racers Edge Motorsports with WTR (USA) | | Acura | NSX | GT3 Evo 22 | Acura | GTD |
| 95 | Auberlen / Hull / Spengler / Edwards | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 | BMW | GTD Pro |
| 96 | Gallagher / Foley / Dinan / Klingmann | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 | BMW | GTD |