| 01 | van der Zande / Bourdais / Dixon / Palou | Cadillac Racing (USA) | Chip Ganassi | Cadillac | V-Series.R | | Cadillac | GTP |
| 023 | Triarsi / Rovera / Agostini / Scardina | Triarsi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 04 | Kurtz / Braun / Sowery / Jakobsen | Crowdstrike Racing by APR (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 1 | Sellers / Snow / Verhagen / van der Linde | Paul Miller Racing (USA) | | BMW | M4 | G82 GT3 | BMW | GTD Pro |
| 2 | Hanley / O'Ward / Keating / Pino | United Autosports USA (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 3 | Garcia / Sims / Juncadella | Corvette Racing by Pratt Miller Motorsports (USA) | | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD Pro |
| 4 | Milner / Catsburg / Bamber | Corvette Racing by Pratt Miller Motorsports (USA) | | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD Pro |
| 5 | Bruni / Jani / Picariello / *Dumas | Proton Competition (D) | Christian Ried | Porsche | 963 | | Porsche | GTP |
| 6 | Tandy / Jaminet / Estre / Vanthoor | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 7 | Cameron / Nasr / Campbell / Newgarden | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 8 | Farano / Dinan / Habsburg / McLaughlin | Tower Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 9 | Kirchhöfer / Jarvis / Rossi / Hinchcliffe | Pfaff Motorsports (CDN) | | McLaren | 720S | GT3 Evo | McLaren | GTD Pro |
| 10 | Taylor / Albuquerque / Hartley / Ericsson | Wayne Taylor Racing with Andretti (USA) | Wayne Taylor | Acura | ARX-06 | | Acura | GTP |
| 11 | Thomas / Jensen / McElrea / Milesi | TDS Racing (F) | | Oreca | 07 | | Gibson | LMP2 |
| 12 | Montecalvo / Thompson / Telitz / Miyata | Vasser Sullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD |
| 13 | Kern / Bell / Fidani / Lynn | AWA (CDN) | Andrew Wojteczko | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD |
| 14 | Hawksworth / Barnicoat / Kirkwood / Conway | VasserSullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD Pro |
| 17 | Mantella / Varrone / Merrill / Eastwood | AWA (CDN) | Andrew Wojteczko | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD |
| 18 | Merriman / Dalziel / Rasmussen / Zilisch | Era Motorsport (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 19 | Perera / Pepper / Caldarelli / Bortolotti | Iron Lynx (I) | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD Pro |
| 20 | Andersen / Lucas / Hörr / Huffaker | MDK by High Class Racing (DK) | | Oreca | 07 | | Gibson | LMP2 |
| 21 | Mann / Heriau / Cozzolino / Molina | AF Corse (I) | Amato Ferrari | Ferrari | 296 | GT3 | Ferrari | GTD |
| 22 | Goldburg / di Resta / Garg / Rosenqvist | United Autosports USA (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 23 | Riberas / Farnbacher / Gunn | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD Pro |
| 24 | Krohn / Farfus / Eng / Vanthoor | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 25 | De Phillippi / Yelloly / Martin / Rast | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 27 | de Angelis / Robichon / James / Sørensen | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD |
| 31 | Derani / Aitken / Blomqvist | Whelen Engineering Cadillac Racing (USA) | Bob Johnson | Cadillac | V-Series.R | | Cadillac | GTP |
| 32 | Skeen / Koch / Grenier / Götz | Korthoff/Preston Motorsports (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 33 | Willsey / Barbosa / Siegel / Edgar | Sean Creech Motorsport (USA) | | Ligier | JS P217 | | Gibson | LMP2 |
| 34 | Franco / Costa / Balzan / Sbirrazzuoli | Conquest Racing (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 40 | Taylor / Deletraz / Herta / Button | Wayne Taylor Racing with Andretti (USA) | Wayne Taylor | Acura | ARX-06 | | Acura | GTP |
| 43 | Hargrove / Preining / Andretti / Chaves | Andretti Motorsports (USA) | Jarett Andretti | Porsche | 992 GT3 R | I | Porsche | GTD |
| 44 | Potter / Pumpelly / Thiim / *Lally | Magnus Racing (USA) | John Potter | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD |
| 45 | Marcelli / Formal / Doyle / Harrison | Wayne Taylor Racing with Andretti (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 47 | Lacorte / Sernagiotto / Cheever / Fuoco | Cetilar Racing (I) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 52 | Smiechowski / Boulle / Dillmann / Novalak | Inter Europol by PR1 Mathiasen Motorsports (PL) | | Oreca | 07 | | Gibson | LMP2 |
| 55 | Hardwick / Olsen / Levorato / Lewis | Proton Competition (D) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD |
| 57 | Ward / Ellis / Morad / Dontje | Winward Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 60 | Schiavoni / Cressoni / Grosjean / Cairoli | Iron Lynx (I) | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD Pro |
| 62 | Serra / Rigon / Pier Guidi / Calado | Risi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD Pro |
| 64 | Rockenfeller / Mies / Tincknell | Ford Multimatic Motorsports (CDN) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD Pro |
| 65 | Hand / Müller / Vervisch | Ford Multimatic Motorsports (CDN) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD Pro |
| 66 | Monk / Legge / Calderón / McAleer | Gradient Racing (USA) | | Acura | NSX | GT3 | Acura | GTD |
| 70 | Schandorff / Gamble / Millroy / *Iribe | Inception Racing (GB) | | McLaren | 720S | GT3 Evo | McLaren | GTD |
| 74 | Robinson / Fraga / Burdon / Massa | Riley (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 75 | Gounon / Stolz / Engel / Habul | Sun Energy 1 (AUS) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD Pro |
| 77 | Heinrich / Priaulx / Christensen | AO Racing (USA) | Gunnar Jeannette | Porsche | 992 GT3 R | I | Porsche | GTD Pro |
| 78 | Goikhberg / Spinelli / DeFrancesco / Mitchell | Forte Racing (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 80 | Pinto de Andrade / Andrews / Yoluc / Christodoulou | Lone Star Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 81 | Lux / Simpson / Allen / Alvarez | DragonSpeed (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 83 | Frey / Bovy / Gatting | Iron Dames (I) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 85 | van der Helm / Hanson / Keating / Westbrook | JDC-Miller MotorSports (USA) | | Porsche | 963 | | Porsche | GTP |
| 86 | Li / Fjordbach / ten Voorde / Bachler | MDK Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 88 | Nielsen / Wadoux / Vaxiviere / *Pérez Companc | Richard Mille AF Corse (I) | | Oreca | 07 | | Gibson | LMP2 |
| 92 | Brule / Udell / Hindman / Andlauer | Kellymoss with Riley (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 96 | Foley / Gallagher / Walker / Klingmann | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 | BMW | GTD |
| 99 | Hyett / Chatin / Brabham / Quinn | AO Racing (USA) | Gunnar Jeannette | Oreca | 07 | | Gibson | LMP2 |
| 120 | Adelson / Skeer / Heylen / Makowiecki | Wright Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |