| 023 | Triarsi / Koch / Megennis / Ye | Triarsi Competizione (USA) | Ferrari | 296 GT3 EVO | Ferrari | GTD |
| 033 | Calado / Agostini / Molina / Rovera | Triarsi Competizione (USA) | Ferrari | 296 GT3 EVO | Ferrari | GTD Pro |
| 04 | Kurtz / Quinn / Sowery / Jakobsen | Crowdstrike Racing by APR (P) | ORECA | 07 | Gibson | LMP2 |
| 1 | Verhagen / De Phillippi / Hesse / Harper | Paul Miller Racing (USA) | BMW | M4 GT3 EVO | BMW | GTD Pro |
| 2 | Fayer / Hanley / McElrea / Jensen | United Autosports USA (USA) | ORECA | 07 | Gibson | LMP2 |
| 3 | Garcia / Sims / Kirchhöfer | Corvette Racing by Pratt Miller Motorsports (USA) | Chevrolet | Corvette Z06 GT3.R | Chevrolet | GTD Pro |
| 4 | Milner / Catsburg / Varrone | Corvette Racing by Pratt Miller Motorsports (USA) | Chevrolet | Corvette Z06 GT3.R | Chevrolet | GTD Pro |
| 6 | Vanthoor / Estre / Campbell | Porsche Penske Motorsport (D) | Porsche | 963 | Porsche | GTP |
| 7 | Nasr / Andlauer / Heinrich | Porsche Penske Motorsport (D) | Porsche | 963 | Porsche | GTP |
| 8 | Farano / Bourdais / Alvarez / Simpson | Tower Motorsports (USA) | ORECA | 07 | Gibson | LMP2 |
| 9 | Caldarelli / Mitchell / Bortolotti / Hinchcliffe | Pfaff Motorsports (CDN) | Lamborghini | Huracan GT3 EVO2 | Lamborghini | GTD Pro |
| 10 | Taylor / Albuquerque / Stevens | Cadillac Wayne Taylor Racing (USA) | Cadillac | V-Series.R | Cadillac | GTP |
| 11 | Lütke / Beche / Heinemeier Hansson / Milesi | TDS Motorsport (F) | ORECA | 07 | Gibson | LMP2 |
| 12 | Telitz / Pedersen / Montecalvo / Masson | Vasser Sullivan Racing (USA) | Lexus | RC F GT3 | Lexus | GTD |
| 13 | Fidani / Bell / Kern / Green | 13 Autosport (CDN) | Chevrolet | Corvette Z06 GT3.R | Chevrolet | GTD |
| 14 | Hawksworth / Barnicoat / Kirkwood | Vasser Sullivan Racing (USA) | Lexus | RC F GT3 | Lexus | GTD Pro |
| 16 | Monk / Fraga / Altzman / Grosjean | Myers Riley Motorsports (USA) | Ford | Mustang GT3 | Ford | GTD |
| 18 | Rao / Habsburg / Abel / Sargeant | Era Motorsport (USA) | ORECA | 07 | Gibson | LMP2 |
| 19 | Hasse-Clot / van der Steur / Baud / Bennett | van der Steur Racing (USA) | Aston Martin | Vantage GT3 Evo | Aston Martin | GTD |
| 21 | Mann / Wadoux / Fuoco / Mosca | Af Corse Usa (I) | Ferrari | 296 GT3 EVO | Ferrari | GTD |
| 22 | Goldburg / di Resta / Lindh / Saucy | United Autosports USA (USA) | ORECA | 07 | Gibson | LMP2 |
| 23 | Gunn / de Angelis / Riberas / Sørensen | ASTON MARTIN THOR Team (USA) | Aston Martin | Valkyrie | Aston Martin | GTP |
| 24 | Vanthoor / van der Linde / Frijns / Rast | BMW M Team WRT (B) | BMW | M Hybrid V8 | BMW | GTP |
| 25 | Eng / Wittmann / Magnussen / Marciello | BMW M Team WRT (B) | BMW | M Hybrid V8 | BMW | GTP |
| 27 | Gamble / Barrichello / Robichon / Drudi | Heart of Racing Team (USA) | Aston Martin | Vantage GT3 Evo | Aston Martin | GTD |
| 28 | Zitza / Heylen / Machavern | RS1 (USA) | Porsche | 911 GT3 R (992) | Porsche | GTD |
| 31 | Aitken / Bamber / Vesti / Zilisch | Cadillac Whelen (USA) | Cadillac | V-Series.R | Cadillac | GTP |
| 34 | Franco / Costa / Patrese / Vermeulen | Conquest Racing (USA) | Ferrari | 296 GT3 EVO | Ferrari | GTD |
| 36 | Filippi / Eastwood / McLaughlin / Yoluc | DXDT Racing (USA) | Chevrolet | Corvette Z06 GT3.R | Chevrolet | GTD |
| 37 | Field / Jarvis / Lucas / van Uitert | Intersport Racing (USA) | ORECA | 07 | Gibson | LMP2 |
| 40 | Taylor / Deletraz / Herta | Cadillac Wayne Taylor Racing (USA) | Cadillac | V-Series.R | Cadillac | GTP |
| 43 | Clarke / Dillmann / Garg / Félix da Costa | Inter Europol Competition (PL) | ORECA | 07 | Gibson | LMP2 |
| 44 | Potter / Pumpelly / Thiim / Snow | Magnus Racing (USA) | Aston Martin | Vantage GT3 Evo | Aston Martin | GTD |
| 45 | Formal / Hindman / Doyle / Ericsson | Wayne Taylor Racing (USA) | Lamborghini | Huracan GT3 EVO2 | Lamborghini | GTD |
| 48 | Noble / Hart / Martin / Stolz | WINWARD RACING (USA) | Mercedes-AMG | -AMG GT3 | | GTD Pro |
| 52 | Goikhberg / Keating / Thompson / Tincknell | Bryan Herta Autosport with PR1/Mathiasen (USA) | ORECA | 07 | Gibson | LMP2 |
| 57 | Ward / Ellis / Dontje / Auer | WINWARD RACING (USA) | Mercedes-AMG | -AMG GT3 | | GTD |
| 59 | Esterson / Johnson / Vips / MacDonald | RLL Team McLaren (USA) | McLaren | 720S GT3 EVO | | GTD Pro |
| 60 | Blomqvist / Braun / Dixon / Allmendinger | Acura Meyer Shank Racing w/Curb Agajanian (USA) | Acura | ARX-06 | Acura | GTP |
| 62 | Serra / Rigon / Pier Guidi | Risi Competizione (USA) | Ferrari | 296 GT3 EVO | Ferrari | GTD Pro |
| 64 | Barker / Olsen / Rockenfeller | Ford Multimatic Motorsports (CDN) | Ford | Mustang GT3 | Ford | GTD Pro |
| 65 | Mies / Vervisch / Priaulx | Ford Multimatic Motorsports (CDN) | Ford | Mustang GT3 | Ford | GTD Pro |
| 66 | Walker / Bechtolsheimer / Lewis / Hand | Gradient Racing (USA) | Ford | Mustang GT3 | Ford | GTD |
| 69 | Bartone / Götz / Schiller | GetSpeed (D) | Mercedes-AMG | -AMG GT3 | | GTD Pro |
| 70 | Iribe / Schandorff / Millroy / Fumanelli | Inception Racing (GB) | Ferrari | 296 GT3 EVO | Ferrari | GTD |
| 73 | Fittipaldi / Espirito Santo / Cumming / Fittipaldi | Pratt Miller Motorsports (USA) | ORECA | 07 | Gibson | LMP2 |
| 75 | Habul / Engel / Power / Mostert | 75 Express (AUS) | Mercedes-AMG | -AMG GT3 | | GTD Pro |
| 77 | Tandy / King / Picariello | AO Racing (USA) | Porsche | 911 GT3 R (992) | Porsche | GTD Pro |
| 77T | | AO Racing (USA) | Porsche | 911 GT3 R (992) | Porsche | GTD Pro |
| 80 | Andrews / Hodenius / Roe / Aron | Lone Star Racing (USA) | Mercedes-AMG | -AMG GT3 | | GTD |
| 81 | Hedman / Altoè / Stevenson / Cairoli | DragonSpeed (USA) | Chevrolet | Corvette Z06 GT3.R | Chevrolet | GTD |
| 83 | Perrodo / Vaxiviere / Nielsen / Murry | Af Corse Usa (I) | ORECA | 07 | Gibson | LMP2 |
| 85 | van der Helm / Pino / Frederick | JDC-Miller MotorSports (USA) | Porsche | 963 | Porsche | GTP |
| 93 | van der Zande / Yelloly / Palou / Ohta | Acura Meyer Shank Racing w/Curb Agajanian (USA) | Acura | ARX-06 | Acura | GTP |
| 96 | Gallagher / Foley / Klingmann / Selldorff | Turner Motorsport (USA) | BMW | M4 GT3 EVO | BMW | GTD |
| 99 | Hyett / Cameron / Edgar / Rasmussen | AO Racing (USA) | ORECA | 07 | Gibson | LMP2 |
| 120 | Adelson / Skeer / Sargent / Ilott | Wright Motorsports (USA) | Porsche | 911 GT3 R (992) | Porsche | GTD |
| 123 | Musial / Musial, Jr. / Ludwig / Yardley | Muehlner Motorsports America, LLC (B) | Porsche | 911 GT3 R (992) | Porsche | GTD |
| 343 | Smiechowski / Kolovos / Siegel / Cassidy | Inter Europol Competition (PL) | ORECA | 07 | Gibson | LMP2 |
| 911 | Preining / Bachler / Güven / Feller | Manthey (D) | Porsche | 911 GT3 R (992) | Porsche | GTD Pro |
| 912 | Hardwick / Lietz / Schuring / Pera | Manthey 1St Phorm (D) | Porsche | 911 GT3 R (992) | Porsche | GTD |