| 00 | Calderari / Zadra / Bryner / Rosenblad | Autosport Racing (CH) | Enzo Calderari | Ferrari | 333 SP | | Ferrari | CA |
| 01 | Nelson / *Drew / *Peter / *Michaelian / *Greenberg | Greycliff Racing | Mark Greenberg | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 02 | Murry / Mowlem / Reiser / Willingham | Reiser/Callas Rennsport | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 03 | Parker / Allen / Hanneman / Parker | NP Racing (USA) | | Dodge | Viper | GTS-R | Dodge | GT2 |
| 04 | Schmidt / Conkel / Schmidt / *Harrington | Schmidt Motorsports | Schmidt Brothers | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 07 | Law / Marshall / Huisman / Tremblay / Marshall | G&W Motorsports | | Porsche | 993 GT2 | Evo | Porsche | GT3 |
| 08 | Wilson / Konig / Ulrich / Pickup | G&W Motorsports (USA) | Cole Scrogham | Porsche | 993 GT2 | R | Porsche | GT2 |
| 09 | Conway / van Cleef / Flis | Spirit of Daytona | | Mitsubishi | Eclipse | | Mitsubishi | GT3 |
| 2 | Fellows / Kneifel / Paul, Jr. | Corvette Racing (USA) | | Chevrolet | Corvette C5 | -R | Chevrolet | GT2 |
| 3 | Haywood / Whittington / Whittington / Sullivan | DLW Racing Inc. (USA) | | Riley & Scott | Mk III | | Ford | CA |
| 4 | Sharp / Pilgrim / Heinricy | Corvette Racing (USA) | | Chevrolet | Corvette C5 | -R | Chevrolet | GT2 |
| 6 | Said / Cunningham / Simo / Quester / *Irvan | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GT3 |
| 7 | McNish / de Radigues / Angelelli / Taylor | Doyle-Risi Racing (USA) | | Ferrari | 333 SP | | Ferrari | CA |
| 8 | Salazar / Dayton / Camferdam / Schubot | Transatlantic Racing (USA) | | Riley & Scott | Mk III | | Ford | CA |
| 10 | Auberlen / Stuck / Cunningham / Van Overbeek | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GT3 |
| 12 | Goldsborough / Baumann / Altenburg / Fairbanks / *Cafik | Genesis Racing (USA) | Rick Fairbanks | Hawk | MD3R | | Chevrolet | CA |
| 13 | Montgomery / Shuster / Trenery / Greer / Trenery | DM Motorsports | | Chevrolet | Camaro | | Chevrolet | GTT |
| 15 | Bentley / Bingham / André / Fréon | Hybrid Racing (USA) | | Riley & Scott | Mk III | | Ford | CA |
| 16 | Weaver / Dyson / Schroeder / Hayner | Dyson Racing Team, Inc. (USA) | | Riley & Scott | Mk III | | Ford | CA |
| 17 | Lewis / Pobst / Mazzuoccola / Raccaro | T. C. Kline Racing (USA) | T. C. Kline | BMW | M3 | E36 | BMW | GT3 |
| 18 | Friedman / Miller / Rice / Auberlen / Peter | Millennium Motorsports (USA) | | Porsche | 911 Carrera RSR | | Porsche | GT3 |
| 19 | McIntyre / Stewart / Petery / Carter / Delano | SK Group Motorsports | | Ford | Mustang Cobra | | Ford | GTT |
| 20 | Leitzinger / Wallace / Forbes-Robinson / *Dyson | Dyson Racing Team, Inc. (USA) | | Riley & Scott | Mk III | | Ford | CA |
| 21 | Rosa / Mangifesta / Zonca / Rosa | Haberthur Racing (CH) | Guido Haberthur | Porsche | 993 GT2 | R | Porsche | GT2 |
| 22 | Kitch / Wolfkill / Hill / Gaughran | Alex Job Racing (USA) | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 23 | Collins / Wagner / Lazzaro / Havens | Alex Job Racing (USA) | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 24 | Jacobs / Biskup / Steinmetz / DeFontes / Del Vecchio | Michael Jacobs (USA) | Michael Jacobs | Ferrari | 348 | | Ferrari | GT3 |
| 25 | Hofer / *Riccitelli / *Blieninger / *Mancini | RWS-Brun Motorsport | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 27 | Goldin / Finlay / Goldin / Russell | Goldin Brothers Racing | | Mazda | RX-7 | | Mazda | GT3 |
| 28 | Field / Jones / Hornish, Jr. / Shank | Intersport Wheel Works (USA) | | Lola | B98/10 | | Ford | CA |
| 29 | Brown / Brickell / Mucha / Mirro | Intersport Wheel Works (USA) | | Riley & Scott | Mk III | | Ford | CA |
| 31 | Casadei / *Ciani / *Bucci / *Garbagnati | Haberthur Racing (CH) | Guido Haberthur | Porsche | 993 GT2 | R | Porsche | GT2 |
| 32 | Lammers / *Konrad / *Sospiri | Konrad Motorsport (D) | Franz Konrad | Lola | B98/10 | | Lotus | CA |
| 33 | Heger / Kitchak / Slater / Konrad | Konrad Motorsport (D) | Franz Konrad | Porsche | 993 GT2 | | Porsche | GT2 |
| 36 | Papis / Johansson / Vasser / Matthews | Matthews Racing (USA) | | Ferrari | 333 SP | | Ferrari | CA |
| 39 | Pumpelly / Mitchum / Kicak / Lester / Dro | Pumpelly/Mitchum Motorsports (USA) | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 40 | Scott / Lasally / Pope / Rankin / McDill | Rankin Racing (USA) | | Chevrolet | Camaro | IV | Chevrolet | GTT |
| 42 | Masselli / De Iturbe / de Lorenzi / Biava / Scapini | Supertech S. B. Racing | | Ferrari | F355 | | Ferrari | GT3 |
| 44 | Nowicki / Smith / Mancuso / Murphy / Farmer | Specter Werks Sports | | Chevrolet | Corvette | | Chevrolet | GT3 |
| 45 | Baron / McCormick / Graham / Hindery / Till | Bell Motorsports | | BMW | M3 | | BMW | GT3 |
| 47 | Vallancourt / James / Thomas | RaceStar Motorsports (USA) | | Spice | SE90 | | Chevrolet | CA |
| 48 | Kaufmann / Ligonnet / Stewart | Freisinger Motorsport (D) | | Porsche | 993 GT2 | | Porsche | GT2 |
| 49 | Irmgratz / Jurasz / van de Vyver / Horn | Freisinger Motorsport (D) | | Porsche | 993 GT2 | | Porsche | GT2 |
| 50 | Beretta / Archer / Donohue | Viper Team Oreca (F) | Hugues de Chaunac | Dodge | Viper | GTS-R | Dodge | GT2 |
| 52 | Arnold / Stitt / Sifton / Gregg | Easton Properties Corp. | William Stitt | Acura | NSX | -R | Acura | GT2 |
| 53 | Scheuren / Smith / McNaughton / Halbing III / Jones | Diablo Racing (USA) | Tom Scheuren | Chevrolet | Camaro | IV | Chevrolet | GTT |
| 54 | Kester / Drendel / Borcheller / Kenton / Neuman | Bell Motorsports (USA) | James Bell | BMW | M3 | E36 | BMW | GT3 |
| 55 | Seiler / Ried / Vuillaume / Ruch | Proton Competition (D) | Gerold Ried | Porsche | 993 GT2 | | Porsche | GT2 |
| 56 | Willems / Manthey / Gindorf / Gallade / Richter | Manthey Racing | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 57 | Kryder / Heinkélé / Ahlgrim | Kryderacing (USA) | | Nissan | 240SX | | Nissan | GT3 |
| 58 | Cilli / *Ruther / *Miller / *White / *Petersen | Petersen Racing | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 60 | Wilson / Moser / Waddell | Kopf Precision Race Products (USA) | | Keiler | KII | | Ford | CA |
| 62 | Ronchi / Treadway / Montani / Spencer | Downing/Atlanta, Inc. (USA) | | Kudzu | DLM | | Mazda | CA |
| 63 | Katz / Terada / Ronson / Downing | Downing/Atlanta, Inc. (USA) | Jim Downing | Kudzu | DLY | | Mazda | CA |
| 66 | Morini / Scarpetta / Cattaneo / Tamburini / De Castro | M.A.C. Racing | | Porsche | 993 Cup | | Porsche | GT3 |
| 67 | Pelke / Pelke / Herrerias / DiGiovanni | The Racers Group (USA) | Kevin Buckler | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 68 | Buckler / Conte / Holt / Lambert | The Racers Group (USA) | Kevin Buckler | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 69 | Wollek / *Perrier / *Ricci / *Larrousse / *Richard | Perspective Racing | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 70 | Buurman / Euser / Van der Kolk / Vann | Marcos Racing (NL) | | Marcos | Mantara | LM600 | Chevrolet | GT2 |
| 72 | Theys / Lienhard / Luyendyk / Baldi | Doran Racing (USA) | | Ferrari | 333 SP | | Ferrari | CA |
| 73 | Wheeler / Lewis / Manfredi / Takahashi / Henriksen | Jack Lewis Enterprises/Autosport South (USA) | Jack Lewis | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 74 | Robinson / Baldwin / Hoerr / Gooding | Robinson Racing (USA) | | Riley & Scott | Mk III | | Chevrolet | CA |
| 75 | Worth / Sansone / Pfeifer / Hampton | Pettit Racing (USA) | Cameron Worth | Mazda | RX-7 | | Mazda | GT2 |
| 76 | Argetsinger / Polidori / Hill / McCaig | Team A.R.E. (USA) | Richard Raimist | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 77 | Bagnall / Mastropietro / Burgess / Neugarten | Seikel Motorsport (D) | Peter Seikel | Porsche | 993 GT2 | | Porsche | GT2 |
| 78 | Roussel / Sezionale / Boulay | SBF Racing | Sylvain Boulay | Norma | M14 | | Buick | CA |
| 79 | Maugeri / Puleo / Penton / Mills / Zitza | Maugeri Motorsports | | Chevrolet | Camaro | IV | Chevrolet | GTT |
| 81 | Gleason / Gläsel / Hornkohl / Hugenholtz | Chamberlain Engineering (GB) | Hugh Chamberlain | Dodge | Viper | GTS-R | Dodge | GT2 |
| 82 | Ortelli / Bertaggia / Hürtgen / Nearn | Roock Racing (D) | Fabian Roock | Porsche | 993 GT2 | | Porsche | GT2 |
| 83 | Ahrlé / Sangiuolo / Warnock / Haupt | Roock Racing (D) | David Warnock | Porsche | 993 GT2 | | Porsche | GT2 |
| 85 | Cilli / Miller / Petersen / Ruther / White | Petersen Racing | | Porsche | 993 | | Porsche | GT3 |
| 87 | Annis / Kohler / Ladoniczki / Ladoniczki / Kennedy | John Annis | | Chevrolet | Camaro | | Chevrolet | GTT |
| 88 | Davies / Dollahite / Bundy / Dallenbach | Dollahite Racing (USA) | | Ferrari | 333 SP | | Ferrari | CA |
| 89 | Crilly / Wright / Lenain / Borkowski / Bove | Broadfoot Racing | | Porsche | 944 | Turbo | Porsche | GT3 |
| 92 | Mowlem / *Reiser / *Willingham / *Murry | Reiser/Callas Rennsport | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 93 | Taleb / *Michelet / *Darquea / *Jimenez | Saeta Airlines Racing | Henry Taleb | Nissan | 240SX | | Nissan | GT3 |
| 95 | Schroeder / Volk / Debban / Valentine | TRV Motorsport | | Riley & Scott | Mk III | | Chevrolet | CA |
| 96 | Green / Brunk / Bell / Fisher / Tola | Entropy Racing | | Chevrolet | Camaro | | Chevrolet | GTT |
| 99 | Snow / Müller / O'Steen / Schumacher | Schumacher Racing (USA) | Larry Schumacher | Porsche | 993 GT2 | | Porsche | GT2 |