| No. | Class | Team | Drivers | Car | Engine | Tyres | Fuel | |
|---|---|---|---|---|---|---|---|---|
| 1 | 0 | P | DeltaWing Racing Cars | Andy Meyrick Katherine Legge Alexander Rossi | DeltaWing DWC13 | Elan | C | E10 |
| 2 | 1 | P | Extreme Speed Motorsports | Scott Sharp Ryan Dalziel David Brabham | HPD ARX-03b | Honda | C | E10 |
| 3 | 2 | P | Extreme Speed Motorsports | Ed Brown Johannes van Overbeek Simon Pagenaud Anthony Lazzaro | HPD ARX-03b | Honda | C | E10 |
| 4 | 5 | P | Action Express Racing | João Barbosa Christian Fittipaldi | Corvette DP | Chevrolet | C | E10 |
| 5 | 6 | P | Pickett Racing | Klaus Graf Lucas Luhr | ORECA | Nissan | C | E10 |
| 6 | 9 | P | Action Express Racing | Brian Frisselle Burt Frisselle | Corvette DP | Chevrolet | C | E10 |
| 7 | 10 | P | Wayne Taylor Racing | Wayne Taylor Max Angelelli Ricky Taylor Jordan Taylor | Corvette DP | Chevrolet | C | E10 |
| 8 | 31 | P | Marsh Racing | Eric Curran Boris Said | Corvette DP | Chevrolet | C | E10 |
| 9 | 42 | P | OAK Racing | Olivier Pla Roman Rusinov | Morgan | Nissan | C | E10 |
| 10 | 50 | P | Highway To Help | TBA TBA | Riley DP | Dinan | C | E10 |
| 11 | 60 | P | Michael Shank Racing | John Pew Ozz Negri Jr AJ Allmendinger Justin Wilson | Riley DP | Ford EcoBoost | C | E10 |
| 12 | 70 | P | SpeedSource | Sylvain Tremblay | Mazda | Mazda | C | D |
| 13 | 90 | P | Spirit of Daytona | Richard Westbrook Michael Valiante | Corvette DP | Chevrolet | C | E10 |
| 14 | 99 | P | GAINSCO/Bob Stallings Racing | Alex Gurney Jon Fogarty Darren Law Memo Gidley | Corvette DP | Chevrolet | C | E10 |
| 15 | 01 | P | Chip Ganassi Racing | Scott Pruett Memo Rojas | Riley DP | Ford EcoBoost | C | E10 |
| 16 | 02 | P | Chip Ganassi Racing | TBA TBA | Riley DP | Ford EcoBoost | C | E10 |
| 17 | 07 | P | SpeedSource | Tristan Nunez | Riley BMW | Mazda | C | D |
| 18 | 7 | PC | Starworks Motorsport | Alex Popow Isaac Tutumlu Martin Fuentes | ORECA FLM09 | Chevrolet | C | E10 |
| 19 | 8 | PC | Starworks Motorsport | Mirco Schultis Renger van der Zande Eric Lux | ORECA FLM09 | Chevrolet | C | E10 |
| 20 | 25 | PC | 8Star Motorsports | Enzo Potolicchio Tom Kimber-Smith | ORECA FLM09 | Chevrolet | C | E10 |
| 21 | 38 | PC | Performance Tech Motorsports | Charlie Shears Jon Brownson Raphael Matos | ORECA FLM09 | Chevrolet | C | E10 |
| 22 | 52 | PC | PR1/Mathiasen Motorsports | Mike Guasch Luis Diaz David Cheng Tomi Drissi James Kovacic | ORECA FLM09 | Chevrolet | C | E10 |
| 23 | 54 | PC | CORE autosport | Jon Bennett | ORECA FLM09 | Chevrolet | C | E10 |
| 24 | 87 | PC | BAR1 Motorsports | TBA TBA | ORECA FLM09 | Chevrolet | C | E10 |
| 25 | 08 | PC | RSR Racing | Chris Cumming | ORECA FLM09 | Chevrolet | C | E10 |
| 26 | 09 | PC | RSR Racing | TBA TBA | ORECA FLM09 | Chevrolet | C | E10 |
| 27 | 551 | PC | Level 5 Motorsports | TBA TBA | ORECA FLM09 | Chevrolet | C | E10 |
| 28 | 552 | PC | Level 5 Motorsports | TBA TBA | ORECA FLM09 | Chevrolet | C | E10 |
| 29 | 3 | GTLM | Corvette Racing | Jan Magnussen Antonio Garcia Ryan Briscoe | Chevrolet Corvette C7.R | Chevrolet | M | E85 |
| 30 | 4 | GTLM | Corvette Racing | Oliver Gavin Tommy Milner Robin Liddell | Chevrolet Corvette C7.R | Chevrolet | M | E85 |
| 31 | 55 | GTLM | BMW Team RLL | Bill Auberlen Andy Priaulx Joey Hand Maxime Martin | BMW Z4 GTE | BMW | M | E85 |
| 32 | 56 | GTLM | BMW Team RLL | Dirk Müller John Edwards Graham Rahal Dirk Werner | BMW Z4 GTE | BMW | M | E85 |
| 33 | 57 | GTLM | Krohn Racing | Tracy Krohn Nic Jonsson | Ferrari F458 Italia | Ferrari | M | E85 |
| 34 | 91 | GTLM | SRT Motorsports | Dominik Farnbacher Marc Goossens | SRT Viper GTS-R | Viper V10 | M | E85 |
| 35 | 93 | GTLM | SRT Motorsports | Jonathan Bomarito Kuno Wittmer | SRT Viper GTS-R | Viper V10 | M | E85 |
| 36 | 97 | GTLM | Aston Martin Racing | Stefan Mücke Darren Turner Pedro Lamy Richie Stanaway Paul Dalla Lana | Aston Martin Vantage V8 | Aston Martin | M | E85 |
| 37 | 911 | GTLM | Porsche North America | TBA TBA | Porsche 911 RSR | Porsche | M | E85 |
| 38 | 912 | GTLM | Porsche North America | TBA TBA | Porsche 911 RSR | Porsche | M | E85 |
| 39 | 18 | GTD | Mühlner Motorsports America | Mark Thomas Earl Bamber | Porsche 911 GT America | Porsche | C | E10 |
| 40 | 19 | GTD | Mühlner Motorsports America | Randy Pobst Jim Michaelian | Porsche 911 GT America | Porsche | C | E10 |
| 41 | 22 | GTD | Alex Job Racing | Cooper MacNeill Leh Keen LP Dumoulin Shane van Gisbergen | Porsche 911 GT America | Porsche | C | E10 |
| 42 | 23 | GTD | Team Seattle/Alex Job Racing | Ian James Mario Farnbacher Alex Riberas | Porsche 911 GT America | Porsche | C | E10 |
| 43 | 27 | GTD | Dempsey Racing | Patrick Dempsey | Porsche 911 GT America | Porsche | C | E10 |
| 44 | 28 | GTD | Dempsey Racing | Joe Foster | Porsche 911 GT America | Porsche | C | E10 |
| 45 | 30 | GTD | NGT Motorsport | Henrique Cisneros | Porsche 911 GT America | Porsche | C | E10 |
| 46 | 32 | GTD | GMG Racing | TBA TBA | Audi R8 LMS | Audi | C | E10 |
| 47 | 33 | GTD | Riley Motorsports | Ben Keating Jeroen Bleekemolen Sebastiaan Bleekemolen Manu Collard | SRT Viper GT3-R | Viper V10 | C | E10 |
| 48 | 35 | GTD | Flying Lizard Motorsports | TBA TBA | Audi R8 LMS | Audi | C | E10 |
| 49 | 44 | GTD | Magnus Racing | John Potter Andy Lally | Porsche 911 GT America | Porsche | C | E10 |
| 50 | 45 | GTD | Flying Lizard Motorsports | TBA TBA | Audi R8 LMS | Audi | C | E10 |
| 51 | 46 | GTD | Fall-Line Motorsports | TBA TBA | Audi R8 LMS | Audi | C | E10 |
| 52 | 48 | GTD | Paul Miller Racing | TBA TBA | Audi R8 LMS | Audi | C | E10 |
| 53 | 49 | GTD | Spirit of Race | Piergiuseppe Perazzini Gianluca Roda Paolo Ruberti | Ferrari 458 Italia | Ferrari | C | E10 |
| 54 | 51 | GTD | Spirit of Race | Matt Griffin Marco Cioci Michele Rugolo | Ferrari 458 Italia | Ferrari | C | E10 |
| 55 | 58 | GTD | Snow Racing | Madison Snow Jan Heylen Marco Siefried | Porsche 911 GT America | Porsche | C | E10 |
| 56 | 63 | GTD | Scuderia Corsa | Alessandro Balzan Jeff Westphal Toni Vilander Lorenzo Case | Ferrari 458 Italia | Ferrari | C | E10 |
| 57 | 64 | GTD | Scuderia Corsa | Rod Randall John Farano Ken Wilden David Empringham | Ferrari 458 Italia | Ferrari | C | E10 |
| 58 | 65 | GTD | Scuderia Corsa | Francisco Longo Daniel Serra Xandinho Negrão Marcos Gomes | Ferrari 458 Italia | Ferrari | C | E10 |
| 59 | 71 | GTD | Park Place Motorsports | Jim Norman Craig Stanton Norbert Siedler | Porsche 911 GT America | Porsche | C | E10 |
| 60 | 72 | GTD | SMP/ESM Racing | TBA TBA | Ferrari 458 Italia | Ferrari | C | E10 |
| 61 | 73 | GTD | Park Place Motorsports | Patrick Lindsey Kevin Estre Connor De Phillippi Jason Hart Mike Vess | Porsche 911 GT America | Porsche | C | E10 |
| 62 | 81 | GTD | GB Autosport | Damien Faulkner Patrick Huisman Bob Faieta | Porsche 911 GT America | Porsche | C | E10 |
| 63 | 94 | GTD | Turner Motorsport | Augusto Farfus Markus Palttala Paul Dalla Lana Dane Cameron | BMW Z4 | BMW | C | E10 |
| 64 | 007 | GTD | TRG-AMR | David Block Al Carter James Davison | Aston Martin V12 Vantage | Aston Martin | C | E10 |
| 65 | 009 | GTD | TRG-AMR | TBA TBA | Aston Martin V12 Vantage | Aston Martin | C | E10 |
| 66 | 555 | GTD | Level 5 Motorsports | Scott Tucker Townsend Bell Bill Sweedler Jeff Segal | Ferrari 458 Italia | Ferrari | C | E10 |
