| 00 | Abergel / Collard / Bourret / Gibon / Pompidou | Aten Motorsports | Tony Dowe | Ferrari | F430 | Challenge | Ferrari | GT |
| 01 | Hand / Pruett / Rahal / Rojas | Chip Ganassi Racing with Felix Sabates (USA) | Mike Hull | Riley | Mk XX | | BMW | DP |
| 02 | Dixon / Franchitti / McMurray / Montoya | Chip Ganassi Racing with Felix Sabates (USA) | Mike Hull | Riley | Mk XX | | BMW | DP |
| 07 | Curran / Gavin / Ledoux / Schaldach | Banner Racing | Leighton Reese | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 4 | Eversley / Graeff / Wallace / Yarab, Jr. / Zahn | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 5 | Donohue / Law / Frisselle / Rice | Action Express Racing | Robert Johnson | Riley | Mk XI | | Porsche | DP |
| 6 | Allmendinger / McDowell / Wilson | Michael Shank Racing with Curb/Agajanian | Michael Shank | Dallara | DP01 | | Ford | DP |
| 7 | Peterson / Valentine | Starworks Motorsport | Peter Baron | Riley | Mk XX | | Ford | DP |
| 8 | Dalziel / Forest / Lowe | Starworks Motorsport | Peter Baron | Riley | Mk XX | | Ford | DP |
| 9 | France / Barbosa / Fittipaldi / Borcheller / Papis | Action Express Racing | Robert Johnson | Riley | Mk XI | | Porsche | DP |
| 10 | Angelelli / Briscoe / Taylor / Taylor | SunTrust Racing | Simon Hodgson | Dallara | DP01 | | Chevrolet | DP |
| 11 | Empringham / Nastasi | TPN Racing/Blackforest | Tom Nastasi | Ford | Mustang | Boss 302 | Ford | GT |
| 17 | Armindo / Baldwin / Burtin / Ragginger / Tandy | Burtin Racing | Claudio Burtin | Porsche | 997 GT3 Cup | | Porsche | GT |
| 18 | Ludwig / Thomas / von Moltke | Muehlner Motorsport | Bernard Muehlner | Porsche | 997 GT3 Cup | | Porsche | GT |
| 22 | O'Young / Wong | Bullet Racing | Steve Paquette | Porsche | 997 GT3 Cup | | Porsche | GT |
| 23 | Brundle / Blundell / Brown / Patterson | United Autosports with Michael Shank Racing | Michael Shank | Riley | Mk XX | | Ford | DP |
| 30 | Buford / Jensen / Jensen / Marsal / Rettich | Racers Edge Motorsports | Jon Mirachi | Mazda | RX-8 | | Mazda | GT |
| 32 | Cheng / Hyatt / Lewis / Papadopoulos | PR1 Motorsports | Bobby Oergel | BMW | M6 | | BMW | GT |
| 36 | Cumming / Hacquard / Marks / Miller | Yellow Dragon Motorsports | Jack Smith | Mazda | RX-8 | | Mazda | GT |
| 40 | Dempsey / Espenlaub / Foster / Long | Dempsey Racing | Joe Foster | Mazda | RX-8 | | Mazda | GT |
| 41 | Gue / Cameron / James / Kitch / Lacey | Dempsey Racing | Joe Foster | Mazda | RX-8 | | Mazda | GT |
| 42 | Gidley / Sahlen / Nonnamaker / Nonnamaker / Nonnamaker | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 43 | Gidley / Sahlen / Nonnamaker / Nonnamaker / Nonnamaker | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 44 | Lietz / Holzer / Potter / Stanton | Magnus Racing | John Potter | Porsche | 997 GT3 Cup | | Porsche | GT |
| 45 | Bergmeister / Van Overbeek / Neiman / Long | Flying Lizard Motorsports | Eric Ingraham | Riley | Mk XI | | Porsche | DP |
| 47 | Earnhardt / Harrington / Hull / Lux / Monroe | Rick Ware Racing | Rick Ware | Porsche | 997 GT3 Cup | | Porsche | GT |
| 48 | Miller / Bell / Sellers / Sugden | Paul Miller Racing | Ali Dunn | Porsche | 997 GT3 Cup | | Porsche | GT |
| 53 | | Magnus Racing/Nadeau Motorsports (USA) | John Potter | Porsche | 997 GT3 Cup | | Porsche | GT |
| 54 | Bleekemolen / Curtis / Pappas / Pilet / Sofronas | TRG/Black Swan Racing/GMG Racing (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 55 | Bouchut / Diaz / Tucker / Wilkins | Level 5 Motorsports | David Stone | Riley | Mk XX | | BMW | DP |
| 56 | Allen / Bennett / Davidson / Skeen | Bennett Racing | Skip Bennett IV | Ferrari | F430 | Challenge | Ferrari | GT |
| 57 | Bremer / Liddell / Magnussen | Stevenson Motorsports | John Stevenson | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 59 | Davis / Haywood / Keen / Lieb | Brumos Racing | Dan Davis | Porsche | 997 GT3 Cup | | Porsche | GT |
| 60 | Goossens / Negri / Pew / Valiante | Michael Shank Racing | Michael Shank | Riley | Mk XX | | Ford | DP |
| 65 | Doyle / Rivera / Mundy / Sheehan | Chris Smith Racing | Christopher Smith | Porsche | 997 GT3 Cup | | Porsche | GT |
| 66 | Buckler / Farnbacher / George, Jr. / Keating / Michaelian | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 67 | Pumpelly / Bertheau / Gaughan / Henzler / Lally | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 69 | Assentato / Ham / Lazzaro / Longhi / Segal | SpeedSource | Sylvain Tremblay | Mazda | RX-8 | | Mazda | GT |
| 70 | Christodoulou / Bomarito / Edwards / Tremblay | SpeedSource | Sylvain Tremblay | Mazda | RX-8 | | Mazda | GT |
| 76 | Jönsson / Krohn / Minassian / Zonta | Krohn Racing | David Brown | Lola | B08/70 | | Ford | DP |
| 77 | Bell / Frisselle / Richard / Kaiser | Doran Racing (USA) | Kevin Doran | Dallara | DP01 | | Ford | DP |
| 81 | Julian / Poordad / Wagner | DragonSpeed | Elton Julian | Ferrari | F430 | Challenge | Ferrari | GT |
| 86 | Atterbury / MacNeil / Pobst / Whitis | Mitchum Motorsports | Chris Mitchum | Porsche | 997 GT3 Cup | | Porsche | GT |
| 88 | Iannetta / Lester / Marsh / O'Connell / Taylor | Autohaus Motorsports | Theresa Conder | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 90 | Edwards / Garcia / Maassen | Spirit of Daytona Racing | Troy Flis | Coyote | CC/09 | | Chevrolet | DP |
| 94 | Auberlen / Plumb / Dalla Lana / Said | Turner Motorsport | Will Turner | BMW | M3 | | BMW | GT |
| 95 | Hunter-Reay / Matos / Tucker / Westbrook | Level 5 Motorsports | David Stone | Riley | Mk XX | | BMW | DP |
| 99 | Gurney / Fogarty / Johnson | GAINSCO/Bob Stallings Racing | Bob Stallings | Riley | Mk XX | | Chevrolet | DP |