| 01 | Bourdais / van der Zande / Dixon | Cadillac V-Series.R | Cadillac Racing | GTP |
| 023 | Rigon / Triarsi / Scardina / Agostini | Ferrari 296 GT3 | Triarsi Competizione | GTD |
| 04 | Kurtz / Braun / Sowery | Oreca 07 Gibson | Crowdstrike Racing by APR | LMP2 |
| 1 | Sellers / Snow | BMW M4 GT3 | Paul Miller Racing | GTD Pro |
| 3 | Garcia / Sims / Juncadella | Chevrolet Corvette C8 Z06 GT3.R | Corvette Racing by Pratt Miller Motorsports | GTD Pro |
| 4 | Milner / Catsburg | Chevrolet Corvette C8 Z06 GT3.R | Corvette Racing by Pratt Miller Motorsports | GTD Pro |
| 6 | Estre / Tandy / Vanthoor / Jaminet | Porsche 963 | Porsche Penske Motorsport | GTP |
| 7 | Cameron / Nasr / Campbell / Newgarden | Porsche 963 | Porsche Penske Motorsport | GTP |
| 8 | Eastwood / Dinan | Oreca 07 Gibson | Tower Motorsports | LMP2 |
| 10 | Taylor / Albuquerque / Deletraz / Ericsson | Acura ARX-06 | Wayne Taylor Racing with Andretti | GTP |
| 11 | Thomas / Jensen / McElrea | Oreca 07 Gibson | TDS Racing | LMP2 |
| 12 | Montecalvo / Thompson / Telitz / Miyata | Lexus RC F GT3 | VasserSullivan | GTD |
| 14 | | Lexus RC F GT3 | VasserSullivan | GTD Pro |
| 19 | Perera / Pepper / Bortolotti / Caldarelli | Lamborghini Huracán GT3 Evo2 | Iron Lynx | GTD Pro |
| 21 | | Ferrari 296 GT3 | AF Corse | GTD |
| 23 | de Angelis / Gunn / Riberas / Farnbacher | Aston Martin Vantage GT3 Evo | Heart of Racing Team | GTD Pro |
| 24 | Krohn / Farfus | BMW M Hybrid V8 | BMW M Team RLL | GTP |
| 25 | De Phillippi / Martin | BMW M Hybrid V8 | BMW M Team RLL | GTP |
| 31 | Derani / Aitken / Blomqvist | Cadillac V-Series.R | Whelen Cadillac Racing | GTP |
| 32 | Adam Christodoulou | Mercedes-AMG GT3 | Korthoff/Preston Motorsports | GTD |
| 33 | Barbosa / Willsey / Edgar | Ligier JS P217 Gibson | Sean Creech Motorsports | LMP2 |
| 34 | Franco / Costa / Sbirrazzuoli / Balzan | Ferrari 296 GT3 | Conquest Racing | GTD |
| 40 | Taylor / Herta / Button / Deletraz | Acura ARX-06 | Wayne Taylor Racing with Andretti | GTP |
| 44 | | Aston Martin Vantage GT3 | Magnus Racing | GTD |
| 45 | Marcelli / Formal / Harrison / Doyle | Lamborghini Huracán GT3 Evo2 | Wayne Taylor Racing with Andretti | GTD |
| 47 | | Ferrari 296 GT3 | Cetilar Racing | GTD |
| 52 | Dillmann / Novalak / Smiechowski | Oreca 07 Gibson | Inter Europol by PR1 Mathiasen Motorsports | LMP2 |
| 57 | Morad / Ward | Mercedes-AMG GT3 | Winward Racing | GTD |
| 60 | | Lamborghini Huracán GT3 Evo2 | Iron Lynx | GTD |
| 62 | Alessandro Pier Guidi | Ferrari 296 GT3 | Risi Competizione | GTD Pro |
| 63 | Grosjean / Caldarelli / Bortolotti / Kvyat | Lamborghini SC63 | Lamborghini Iron Lynx | GTP |
| 64 | Rockenfeller / Tincknell | Ford Mustang GT3 | Ford Multimatic Motorsports | GTD Pro |
| 65 | Müller / Hand | Ford Mustang GT3 | Ford Multimatic Motorsports | GTD Pro |
| 66 | Legge / Monk / Calderón / McAleer | Acura NSX GT3 | Gradient Racing | GTD |
| 70 | | McLaren 720S GT3 Evo | Inception Racing | GTD |
| 74 | Robinson / Fraga / Burdon / Massa | Oreca 07 Gibson | Riley | LMP2 |
| 78 | Goikhberg / Spinelli / DeFrancesco | Lamborghini Huracán GT3 Evo2 | Forte Racing | GTD |
| 83 | Frey / Pin / Gatting / Bovy | Lamborghini Huracán GT3 Evo2 | Iron Dames | GTD |
| 88 | Pérez Companc / Nielsen | Oreca 07 Gibson | Richard Mille AF Corse | LMP2 |
| 91 | | Porsche 992 GT3 R | Kellymoss with Riley | GTD |
| 92 | Brule / Udell | Porsche 992 GT3 R | Kellymoss with Riley | GTD |
| 96 | Foley / Gallagher | BMW M4 GT3 | Turner Motorsport | GTD |
| 120 | Adelson / Skeer / Heylen | Porsche 992 GT3 R | Wright Motorsports | GTD |