| 021 | Monk / McAleer / Skeen | Triarsi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 023 | Triarsi / Scardina | Triarsi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 1 | Snow / Verhagen / De Phillippi | Paul Miller Racing (USA) | | BMW | M4 | G82 GT3 Evo | BMW | GTD Pro |
| 6 | Jaminet / Campbell / Estre / McLaughlin | Porsche Penske Motorsport (D) | | Porsche | 963 | | Porsche | GTP |
| 7 | Nasr / Tandy / Vanthoor / Newgarden | Porsche Penske Motorsport (D) | | Porsche | 963 | | Porsche | GTP |
| 8 | Bourdais / Alvarez / *Farano | Tower Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 10 | Taylor / Albuquerque / Taylor / Deletraz | Cadillac Wayne Taylor Racing (USA) | Wayne Taylor | Cadillac | V-Series.R | | Cadillac | GTP |
| 11 | Thomas / McElrea | TDS Racing (F) | | Oreca | 07 | | Gibson | LMP2 |
| 12 | Hawksworth / Thompson / Montecalvo / Barnicoat | Vasser Sullivan Racing (USA) | | Lexus | RC F | GT3 | Lexus | GTD |
| 13 | Fidani / Bell / Kern | AWA (CDN) | Andrew Wojteczko | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD |
| 14 | Barnicoat / Telitz / Kirkwood | Vasser Sullivan Racing (USA) | | Lexus | RC F | GT3 | Lexus | GTD Pro |
| 18 | Dalziel / Heinemeier Hansson / Ohta | Era Motorsport (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 22 | Goldburg / di Resta / Lindh | United Autosports USA (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 23 | de Angelis / Riberas / Gamble | Aston Martin THOR Team (USA) | | Aston Martin | Valkyrie | AMR-LMH | Aston Martin | GTP |
| 24 | Vanthoor / Magnussen | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 25 | Wittmann / van der Linde | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 27 | Gamble / Stevenson | Heart of Racing Team (USA) | | Aston Martin | Vantage AMR | GT3 Evo | Aston Martin | GTD |
| 31 | Aitken / Bamber / Vesti | Cadillac Whelen (USA) | Bob Johnson | Cadillac | V-Series.R | | Cadillac | GTP |
| 32 | Lucas / Koch / Götz | Korthoff Competition Motors (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 34 | Heylen / Conwright | Conquest Racing (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 36 | Yoluc / Udell / Eastwood | DXDT Racing (USA) | | Chevrolet | Corvette C8 | Z06 GT3.R | Chevrolet | GTD |
| 43 | Dillmann / Field / Garg | Inter Europol Competition (PL) | | Oreca | 07 | | Gibson | LMP2 |
| 45 | Formal / Hindman / Doyle | Wayne Taylor Racing (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 48 | Hesse / Harper / Krohn | Paul Miller Racing (USA) | | BMW | M4 | G82 GT3 Evo | BMW | GTD Pro |
| 52 | Sales / Pedersen / Beche | PR1 Mathiasen Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 57 | Ward / Ellis / Dontje | Winward Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 60 | Blomqvist / Braun / Dixon | Acura Meyer Shank Racing w/Curb Agajanian (USA) | | Acura | ARX-06 | | Acura | GTP |
| 63 | Grosjean / *Caldarelli | Automobili Lamborghini Squadra Corse (I) | | Lamborghini | SC63 | | Lamborghini | GTP |
| 64 | Rockenfeller / Priaulx / Barker | Ford Multimatic Motorsports (CDN) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD Pro |
| 65 | Mies / Vervisch / Olsen | Ford Multimatic Motorsports (CDN) | | Ford | Mustang GT3 | Gen 7 | Ford | GTD Pro |
| 74 | Robinson / Fraga / Burdon | Riley (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 77 | Heinrich / Bachler / Edgar | AO Racing (USA) | Gunnar Jeannette | Porsche | 992 GT3 R | I | Porsche | GTD Pro |
| 78 | Goikhberg / Farnbacher / Perera / Kligerman | Forte Racing (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 80 | Knox / Filgueiras / Andrews | Lone Star Racing (USA) | | Mercedes-AMG | GT3 | | Mercedes-AMG | GTD |
| 85 | van der Helm / Bruni / Fielding / Serravalle | JDC Miller MotorSports (USA) | | Porsche | 963 | | Porsche | GTP |
| 88 | Pérez Companc / Pérez Companc / Murry | AF Corse (I) | | Oreca | 07 | | Gibson | LMP2 |
| 93 | van der Zande / Yelloly | Acura Meyer Shank Racing w/Curb Agajanian (USA) | | Acura | ARX-06 | | Acura | GTP |
| 96 | Gallagher / Foley / Walker | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 Evo | BMW | GTD |
| 99 | Hyett / Cameron / Edgar | AO Racing (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 120 | Adelson / Skeer / Sargent | Wright Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |