| 01 | Hand / Pruett / Rahal / Rojas | Chip Ganassi Racing with Felix Sabates (USA) | Mike Hull | Riley | Mk XXVI | | BMW | DP |
| 02 | Dixon / Franchitti / McMurray / Montoya | Chip Ganassi Racing with Felix Sabates (USA) | Mike Hull | Riley | Mk XXVI | | BMW | DP |
| 03 | Brown / Cosmo / Van Overbeek / Sharp | Extreme Speed Motorsports | Scott Sharp | Ferrari | 458 | Italia Grand-Am | Ferrari | GT |
| 2 | Popow / Dalziel / McNish / Potolicchio / Viso | Starworks Motorsport | Peter Baron | Riley | Mk XX | | Ford | DP |
| 4 | Bell / Eversley / Graeff / Yarab, Jr. | Magnus Racing | John Potter | Porsche | 997 GT3 Cup | | Porsche | GT |
| 5 | Donohue / Fittipaldi / Law | Action Express Racing | Robert Johnson | Chevrolet | Corvette DP | | Chevrolet | DP |
| 6 | Goncalvez / McDowell / Nasr / Yacaman | Michael Shank Racing | Michael Shank | Riley | Mk XX | | Ford | DP |
| 8 | Popow / Dalziel / McNish / Luhr / Potolicchio | Starworks Motorsport | Peter Baron | Riley | Mk XX | | Ford | DP |
| 9 | France / Barbosa / Borcheller / Papis | Action Express Racing | Robert Johnson | Chevrolet | Corvette DP | | Chevrolet | DP |
| 10 | Angelelli / Briscoe / Taylor | SunTrust Racing | Simon Hodgson | Chevrolet | Corvette DP | | Chevrolet | DP |
| 12 | Miller / Rettich / Schneider / Shoff | Alliance Autosport | Scott Rettich | Porsche | 997 GT3 Cup | | Porsche | GT |
| 15 | Cook / Earnhardt / Harrington / Hill | Rick Ware Racing | Rick Ware | Ford | Mustang | Boss 302 R | Ford | GT |
| 16 | Drissi / O'Connell / Sandberg / Ware | Rick Ware Racing | Rick Ware | Porsche | 997 GT3 Cup | | Porsche | GT |
| 17 | Asch / Baldwin / Burtin / Ragginger / Sellers | Burtin Racing with Goldcrest Motorsports | Claudio Burtin | Porsche | 997 GT3 Cup | | Porsche | GT |
| 18 | Grüber / Lester / O'Doski / Thomas | Muehlner Motorsports America, LLC | Bernard Muehlner | Porsche | 997 GT3 Cup | | Porsche | GT |
| 20 | Engstler / Murry / Safina / Schaldach | Liqui Moly Team Englster/Mitchum Motorsports Porsche | Chris Mitchum | Porsche | 997 GT3 Cup | | Porsche | GT |
| 22 | Blaylock / O'Young / Paquette / Van Blankers / White | Bullet Racing | Steve Paquette | Porsche | 997 GT3 Cup | | Porsche | GT |
| 23 | Holzer / Collard / Leitzinger / MacNeil | Alex Job Racing (USA) | Alex Job | Porsche | 997 GT3 Cup | | Porsche | GT |
| 24 | Faieta / Avenatti / Poordad / Sweedler / Wagner | Alex Job Racing | Alex Job | Porsche | 997 GT3 Cup | | Porsche | GT |
| 26 | Cisneros / Edwards / Kauffmann / Tandy | NGT Motorsport | Ramez Wahab | Porsche | 997 GT3 Cup | | Porsche | GT |
| 34 | | Orbit/GMG | Rodger Hawley | Porsche | 997 GT3 Cup | | Porsche | GT |
| 40 | Dempsey / Espenlaub / Long / Foster / Putman | Dempsey Racing | Joe Foster | Mazda | RX-8 | | Mazda | GT |
| 41 | Espenlaub / Kitch / Rogers / Johnson | Dempsey Racing | Joe Foster | Mazda | RX-8 | | Mazda | GT |
| 42 | Nonnamaker / Cameron / Nonnamaker / Nonnamaker / Sahlen | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 43 | Nonnamaker / Cameron / Nonnamaker / Nonnamaker / Sahlen | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 44 | Lally / Rast / Lietz / Potter | Magnus Racing | John Potter | Porsche | 997 GT3 Cup | | Porsche | GT |
| 45 | Bergmeister / Neiman / Long / Rockenfeller | Flying Lizard Motorsports with Wright Motorsports | Eric Ingraham | Porsche | 997 GT3 Cup | | Porsche | GT |
| 46 | Baughman / Mason / Yeakle | Michael Baughman Racing | Michael Baughman | Chevrolet | Corvette | | Chevrolet | GT |
| 48 | Maassen / Bell / Miller / Wilkins | Paul Miller Racing | Paul Miller | Porsche | 997 GT3 Cup | | Porsche | GT |
| 49 | Nonnamaker / Cameron / Nonnamaker / Nonnamaker / Sahlen | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 50 | Defoor / Forbes-Robinson / Johnson / Pace / de Quesada | 50+Predator/Alegra | Byron Defoor | Riley | Mk XI | | BMW | DP |
| 51 | Pirro / Baas / Canache / Norman / von Moltke | APR Motorsport | Jeff Mishtawy | Audi | R8 LMS | Grand-Am | Audi | GT |
| 52 | Frank Stippler | Audi Sport AG | Brad Kettler | Audi | R8 LMS | Grand-Am | Audi | GT |
| 54 | Willsey / Amindo / Sofronas / Curtis | GMG Racing | | Porsche | 997 GT3 Cup | | Porsche | GT |
| 55 | Del Vecchio / Grunnet / Kester / McKee | Acumen Motorsport | Douglas Grunnet | Porsche | 997 GT3 Cup | | Porsche | GT |
| 56 | Aguas / Kauffman / Pastrana / Waltrip | AF - Waltrip (I) | Amato Ferrari | Ferrari | 458 | Italia Grand-Am | Ferrari | GT |
| 57 | Bremer / Edwards / Liddell | Stevenson Motorsports | John Stevenson | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 59 | Davis / Haywood / Keen / Lieb | Brumos Racing | Donald Schinsing | Porsche | 997 GT3 Cup | | Porsche | GT |
| 60 | Allmendinger / Negri / Pew / Wilson | Michael Shank Racing | Michael Shank | Riley | Mk XXVI | | Ford | DP |
| 62 | Fisichella / Bruni / Matos | Risi Competizione | Ronald Vogel II | Ferrari | 458 | Italia Grand-Am | Ferrari | GT |
| 63 | Bertolini / Beretta / Vilander | Risi Competizione | Giuseppe Risi | Ferrari | 458 | Italia Grand-Am | Ferrari | GT |
| 64 | Ardagna / Costabal / Di Guida / Salazar | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 65 | Doyle / Hedlund / McCarthy / Michaelian | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 66 | Farnbacher / Keating / Farnbacher / Pilet / Simonsen | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 67 | Pumpelly / Bertheau / Goossens / Henzler | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 68 | Cumming / Estre / Faulkner / Gomez / Keating | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 69 | Assentato / Lazzaro / Longhi / Segal | AIM Autosport Team FXDD Racing with Ferrari | Ian Willis | Ferrari | 458 | Italia Grand-Am | Ferrari | GT |
| 70 | Bomarito / Franchitti / Hinchcliffe / Tremblay | SpeedSource | Sylvain Tremblay | Mazda | RX-8 | | Mazda | GT |
| 74 | Al Masaood / Al Mehairi / Kane | Oryx Racing | Humaid Al Masaood | Audi | R8 LMS | Grand-Am | Audi | GT |
| 75 | Bell / Carter / Curran / Plumb | Stevenson Motorsports | John Stevenson | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 76 | Braun / Jönsson / Krohn / Zonta | Krohn Racing | David Brown | Lola | B08/70 | | Ford | DP |
| 77 | Frisselle / Lowe / Frisselle | Doran Racing (USA) | Kevin Doran | Dallara | DP01 | | Ford | DP |
| 82 | Fergus / Finger / Greer / Hotchkis / Trinkler | Dick Greer Racing | Dick Greer | Porsche | 997 GT3 Cup | | Porsche | GT |
| 87 | Ave / Soulet / Heylen / Peterson / Valverde | Racers Edge Motorsports | Jon Mirachi | Dodge | Viper | | Dodge | GT |
| 88 | Edwards / Marsh / Milner / Taylor | Autohaus Motorsports | Theresa Conder | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 90 | Garcia / Gavin / Magnussen / Westbrook | Spirit of Daytona | Troy Flis | Chevrolet | Corvette DP | | Chevrolet | DP |
| 93 | Marsal / Müller / Said / Müller / Werner | Turner Motorsport | Will Turner | BMW | M3 | | BMW | GT |
| 94 | Auberlen / Johnson / Dalla Lana / Said | Turner Motorsport | Will Turner | BMW | M3 | | BMW | GT |
| 99 | Gidley / Fogarty / Gurney | GAINSCO/Bob Stallings Racing | Bob Stallings | Chevrolet | Corvette DP | | Chevrolet | DP |