| 01 | Dixon / Bourdais / van der Zande | Cadillac Racing (USA) | Chip Ganassi | Cadillac | V-Series.R | | Cadillac | GTP |
| 023 | Rovera / Scardina / Triarsi | Triarsi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 027 | Robichon / Sørensen / Farnbacher | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD Pro |
| 1 | Verhagen / Snow / Sellers | Paul Miller Racing (USA) | | BMW | M4 | G82 GT3 | BMW | GTD Pro |
| 2 | Keating / *Pino / *Hanley | United Autosports USA (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 3 | Juncadella / Sims / Garcia | Corvette Racing by Pratt Miller Motorsports (USA) | | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD Pro |
| 4 | Bamber / Catsburg / Milner | Corvette Racing by Pratt Miller Motorsports (USA) | | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD Pro |
| 5 | Picariello / Viscaal / Bruni | Proton Competition Mustang Sampling (D) | Christian Ried | Porsche | 963 | | Porsche | GTP |
| 6 | Estre / Jaminet / Tandy | Porsche Penske Motorsport (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 7 | Campbell / Nasr / Cameron | Porsche Penske Motorsport (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 8 | Alvarez / Farano / Vesti | Tower Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 9 | Hinchcliffe / Jarvis / Kirchhöfer | Pfaff Motorsports (CDN) | | McLaren | 720S | GT3 Evo | McLaren | GTD Pro |
| 10 | Hartley / Albuquerque / Taylor | Wayne Taylor Racing with Andretti (USA) | | Acura | ARX-06 | | Acura | GTP |
| 11 | McElrea / Jensen / Thomas | TDS Racing (F) | | Oreca | 07 | | Gibson | LMP2 |
| 12 | Telitz / Thompson / Montecalvo | VasserSullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD |
| 13 | Kern / Bell / Fidani | AWA (CDN) | Andrew Wojteczko | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD |
| 14 | Kirkwood / Barnicoat / Hawksworth | VasserSullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD Pro |
| 18 | Zilisch / Dalziel / Merriman | Era Motorsport (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 19 | Bortolotti / Pepper / Perera | Iron Lynx (I) | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD Pro |
| 20 | Huffaker / Lucas / Andersen | MDK by High Class Racing (DK) | | Oreca | 07 | | Gibson | LMP2 |
| 21 | Molina / Heriau / Mann | AF Corse (I) | Amato Ferrari | Ferrari | 296 | GT3 | Ferrari | GTD |
| 22 | Garg / di Resta / Goldburg | United Autosports USA (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 23 | de Angelis / Riberas / Gunn | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD Pro |
| 24 | Farfus / Eng / Krohn | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 25 | Yelloly / De Phillippi / *Martin | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 31 | Blomqvist / Aitken / Derani | Whelen Cadillac Racing (USA) | Bob Johnson | Cadillac | V-Series.R | | Cadillac | GTP |
| 32 | Skeen / Koch / Grenier | Korthoff/Preston Motorsports (USA) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 34 | Sbirrazzuoli / Costa / Franco | Conquest Racing (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 40 | Herta / Deletraz / Taylor | Wayne Taylor Racing with Andretti (USA) | | Acura | ARX-06 | | Acura | GTP |
| 44 | Potter / *Pumpelly / *Lally | Magnus Racing (USA) | | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD |
| 45 | Doyle / Formal / Marcelli | Wayne Taylor Racing with Andretti (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 47 | Fuoco / Sernagiotto / Lacorte | Cetilar Racing (I) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 52 | Dillmann / Smiechowski / Boulle | Inter Europol by PR1 Mathiasen Motorsports (PL) | | Oreca | 07 | | Gibson | LMP2 |
| 55 | Lewis / Levorato / Hardwick | Proton Competition (D) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD |
| 57 | Dontje / Ellis / Ward | Winward Racing (USA) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 62 | Pier Guidi / Rigon / Serra | Risi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD Pro |
| 63 | Grosjean / Caldarelli / Cairoli | Lamborghini Iron Lynx (I) | Andrea Piccini | Lamborghini | SC63 | | Lamborghini | GTP |
| 64 | Mies / Rockenfeller / Tincknell | Ford Multimatic Motorsports (CDN) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD Pro |
| 65 | Vervisch / Müller / Hand | Ford Multimatic Motorsports (CDN) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD Pro |
| 66 | McAleer / Calderón / Monk | Gradient Racing (USA) | | Acura | NSX | GT3 Evo | Acura | GTD |
| 70 | Millroy / Schandorff / Iribe | Inception Racing (GB) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 74 | Burdon / Fraga / Robinson | Riley (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 77 | Andlauer / Christensen / Heinrich | AO Racing (USA) | Gunnar Jeannette | Porsche | 992 GT3 R | I | Porsche | GTD Pro |
| 78 | DeFrancesco / Spinelli / Goikhberg | Forte Racing (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 80 | Andrews / Pinto de Andrade / Yoluc | Lone Star Racing (USA) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 82 | Abril / Neubauer / Vilander | DragonSpeed (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD Pro |
| 83 | Bovy / Frey / Gatting | Iron Dames (I) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 85 | Hanson / Westbrook / van der Helm | JDC-Miller MotorSports (USA) | | Porsche | 963 | | Porsche | GTP |
| 86 | Bachler / Fjordbach / Li | MDK Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 88 | Wadoux / Nielsen / Pérez Companc | Richard Mille AF Corse (I) | | Oreca | 07 | | Gibson | LMP2 |
| 96 | Walker / Gallagher / Foley | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 | BMW | GTD |
| 99 | Brabham / Chatin / Hyett | AO Racing (USA) | Gunnar Jeannette | Oreca | 07 | | Gibson | LMP2 |
| 120 | Heylen / Skeer / Adelson | Wright Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |