| 01 | Bourdais / van der Zande / Dixon | Cadillac Racing (USA) | Chip Ganassi | Cadillac | V-Series.R | | Cadillac | GTP |
| 02 | Lynn / Bamber / Westbrook | Cadillac Racing (USA) | Chip Ganassi | Cadillac | V-Series.R | | Cadillac | GTP |
| 023 | Rovera / Triarsi / Bertolini / Scardina | Triarsi Competizione (USA) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 04 | Kurtz / Hanley / Gutierrez / McMurry | Crowdstrike Racing by APR (P) | | Oreca | 07 | | Gibson | LMP2 |
| 1 | Snow / Sellers / Lewis / Martin | Paul Miller Racing (USA) | | BMW | M4 | G82 GT3 | BMW | GTD |
| 3 | Garcia / Taylor / Milner | Corvette Racing (USA) | | Chevrolet | Corvette C8 | .R GTD | Chevrolet | GTD Pro |
| 6 | Tandy / Jaminet / Cameron | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 7 | Nasr / Campbell / Christensen | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |
| 8 | Farano / Simpson / McLaughlin / Newgarden | Tower Motorsports | | Oreca | 07 | | Gibson | LMP2 |
| 9 | Bachler / Vanthoor / Pilet | Pfaff Motorsports (CDN) | | Porsche | 992 GT3 R | I | Porsche | GTD Pro |
| 10 | Taylor / Albuquerque / Deletraz / Hartley | Konica Minolta Acura ARX-06 (USA) | | Acura | ARX-06 | | Acura | GTP |
| 11 | Thomas / Huffaker / Jensen / VeeKay | TDS Racing | | Oreca | 07 | | Gibson | LMP2 |
| 12 | Telitz / Montecalvo / Thompson / Kirkwood | VasserSullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD |
| 13 | Fidani / Bell / Kranz / Kern | AWA (CDN) | Andrew Wojteczko | Duqueine | D08 | | Nissan | LMP3 |
| 14 | Barnicoat / Hawksworth / Conway | Vasser Sullivan (USA) | | Lexus | RC F | GT3 | Lexus | GTD Pro |
| 16 | Hardwick / Heylen / Olsen / Robichon | Wright Motorsports | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 17 | Mantella / Varrone / Boyd / Merrill | AWA (CDN) | Andrew Wojteczko | Duqueine | D08 | | Nissan | LMP3 |
| 18 | Merriman / Jarvis / Dalziel / Rasmussen | Era Motorsport | | Oreca | 07 | | Gibson | LMP2 |
| 19 | Schiavoni / Perera / Giammaria / Ineichen | Iron Lynx | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 20 | Andersen / Jones / Marciello / Fjordbach | High Class Racing | | Oreca | 07 | | Gibson | LMP2 |
| 21 | Mann / Molina / Castellacci / Pérez Companc | AF Corse (I) | Amato Ferrari | Ferrari | 296 | GT3 | Ferrari | GTD |
| 23 | Gunn / Riberas / Pittard | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD Pro |
| 24 | Farfus / Wittmann / Eng / Herta | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 25 | Yelloly / De Phillippi / van der Linde / Herta | BMW M Team RLL (USA) | | BMW | M Hybrid V8 | | BMW | GTP |
| 27 | James / Sørensen / Turner / de Angelis | Heart of Racing Team (USA) | Ian James | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD |
| 31 | Derani / Aitken / Sims | Whelen Engineering Racing Cadillac V-LMDh (USA) | Bob Johnson | Cadillac | V-Series.R | | Cadillac | GTP |
| 32 | Skeen / Koch / Götz / Grenier | Team Korthoff Motorsports | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 33 | Pino / Siegel / Barbosa / Willsey | Sean Creech Motorsport | | Ligier | JS P320 | | Nissan | LMP3 |
| 35 | Hériau / van Uitert / Pierson / Van Der Garde | TDS Racing | | Oreca | 07 | | Gibson | LMP2 |
| 36 | Dickerson / Lindh / Chaves / Andretti | Andretti Autosport (USA) | Michael Andretti | Ligier | JS P320 | | Nissan | LMP3 |
| 38 | Shields / Bloum / Allen / DeAngelis | Performance Tech Motorsports (USA) | | Ligier | JS P320 | | Nissan | LMP3 |
| 42 | Deledda / Conwright / Megennis / Li / *Yount | NTE Sport (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 43 | de Oliveira / Alvarez / French / Frost | MRS GT-Racing (D) | | Ligier | JS P320 | | Nissan | LMP3 |
| 44 | Potter / Lally / Thiim / Pumpelly | Magnus Racing (USA) | John Potter | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD |
| 47 | Sernagiotto / Lacorte / *Balzan / *Fuoco | Cetilar Racing (I) | | Ferrari | 296 | GT3 | Ferrari | GTD |
| 51 | Lux / DeFrancesco / Cindric / Fittipaldi | Rick Ware Racing | | Oreca | 07 | | Gibson | LMP2 |
| 52 | Keating / Quinn / Chatin / Lapierre | PR1 Mathiasen Motorsports (USA) | | Oreca | 07 | | Gibson | LMP2 |
| 53 | Kvamme / Estep / Magnussen / Hart | MDK Motorsports (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD Pro |
| 55 | Poordad / Allen / Pizzi / Bruni | Proton Competition (D) | | Oreca | 07 | | Gibson | LMP2 |
| 57 | Auer / Dontje / Ward / Ellis | Winward Racing (USA) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 57T | Ward / Dontje / Morad / Ellis | Winward Racing (USA) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 60 | Blomqvist / Pagenaud / Castroneves / Braun | Meyer Shank Racing w/ Curb Agajanian (USA) | | Acura | ARX-06 | | Acura | GTP |
| 62 | Serra / Calado / Rigon / Pier Guidi | Risi Competizione | | Ferrari | 296 | GT3 | Ferrari | GTD Pro |
| 63 | Pepper / Bortolotti / Caldarelli / Grosjean | Iron Lynx | Andrea Piccini | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD Pro |
| 64 | Giovanis / Plumb / Trinkler | TGM/TF Sport (GB) | Tom Ferrier | Aston Martin | Vantage AMR | GT3 | Aston Martin | GTD Pro |
| 66 | Monk / Farnbacher / Legge / Miller | Gradient Racing | | Acura | NSX | GT3 Evo | Acura | GTD |
| 70 | Kirchhöfer / Schandorff / Millroy / Iribe | Inception Racing (GB) | | McLaren | 720S | GT3 | McLaren | GTD |
| 74 | Robinson / *Burdon / *Fraga / *van Berlo | Riley (USA) | | Ligier | JS P320 | | Nissan | LMP3 |
| 75 | Schiller / Stolz / Habul / Jefferies | Sun Energy 1 | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD |
| 77 | Brynjolfsson / Hindman / Estre / Root | Wright Motorsports | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 78 | Goikhberg / Spinelli / Mapelli / Hites | US RaceTronics (USA) | | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 79 | Engel / Gounon / Juncadella / MacNeil | WeatherTech Racing (USA) | | Mercedes-AMG | GT3 | Evo | Mercedes-AMG | GTD Pro |
| 80 | Hyett / Priaulx / Tincknell / Jeannette | AO Racing (USA) | Gunnar Jeannette | Porsche | 992 GT3 R | I | Porsche | GTD |
| 83 | Frey / Pin / Gatting / Bovy | Iron Dames (I) | Deborah Mayer | Lamborghini | Huracán | GT3 Evo2 | Lamborghini | GTD |
| 85 | Bechtolsheimer / van der Helm / Filippi / Mars | JDC Miller MotorSports (USA) | | Duqueine | D08 | | Nissan | LMP3 |
| 87 | Kanamaru / Serravalle / Boulle / Vance | FastMD Racing | | Duqueine | D08 | | Nissan | LMP3 |
| 88 | Perrodo / Nielsen / Vaxiviere / Canal | AF Corse | | Oreca | 07 | | Gibson | LMP2 |
| 91 | Metni / Andlauer / Evans / van Berlo | Kellymoss with Riley (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 92 | Brule / Udell / Bleekemolen / Davis | Kellymoss with Riley (USA) | | Porsche | 992 GT3 R | I | Porsche | GTD |
| 93 | Marcelli / Formal / Harrison / Briscoe | Racers Edge Motorsports with WTR (USA) | | Acura | NSX | GT3 Evo 22 | Acura | GTD |
| 95 | Auberlen / Edwards / Spengler / Hull | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 | BMW | GTD Pro |
| 96 | Foley / Klingmann / Gallagher / Dinan | Turner Motorsport (USA) | | BMW | M4 | G82 GT3 | BMW | GTD |
| | Porsche Penske Motorsports (D) | Roger Penske | Porsche | 963 | | Porsche | GTP |