27 Cars entered for Edmonton race
Entry List
| Car | Driver | Hometown | Car Name | Entrant | Race Strategist |
| 2 | A.J. Foyt IV | Hockley, Texas | Lilly Diabetes/Vision Racing | Vision Racing | Tony George |
| 3 | Helio Castroneves | Sao Paulo, Brazil | Team Penske | Team Penske | Tim Cindric |
| 4 | Vitor Meira | Brasilia, Brazil | Delphi National Guard | Panther Racing | John Barnes |
| 5 | Oriol Servia | Pals, Catalonia, Spain | KV Racing Technology | KV Racing Technology | Jimmy Vasser |
| 6 | Ryan Briscoe | Sydney, Australia | Team Penske | Team Penske | Roger Penske |
| 7 | Danica Patrick | Roscoe, Ill. | Motorola | Andretti Green Racing | Kyle Moyer |
| 8 | Will Power (R) | Toowoomba, Australia | Aussie Vineyards-Team Australia | KV Racing Technology | Mark Johnson |
| 9 | Scott Dixon | Auckland, New Zealand | Target Chip Ganassi Racing | Target Chip Ganassi Racing | Mike Hull |
| 10 | Dan Wheldon | Emberton, England | Target Chip Ganassi Racing | Target Chip Ganassi Racing | Chip Ganassi |
| 11 | Tony Kanaan | Salvador, Bahia, Brazil | Team 7-Eleven | Andretti Green Racing | George Klotz |
| 14 | Darren Manning | North Yorkshire, England | ABC Supply Co./AJ Foyt Racing | A.J. Foyt Enterprises | A.J. Foyt |
| 15 | Buddy Rice | Phoenix | Dreyer & Reinbold Racing | Dreyer & Reinbold Racing | Dennis Reinbold |
| 17 | Ryan Hunter-Reay | Boca Raton, Fla. | Rahal Letterman Racing Team Ethanol | Rahal Letterman Racing | Scott Roembke |
| 18 | Bruno Junqueira | Belo Horizonte, Brazil | Z-Line Designs | Dale Coyne Racing | Dale Coyne |
| 19 | Mario Moraes (R) | Sao Paulo, Brazil | Sonny’s Bar-B-Q | Dale Coyne Racing | Adam Schaechter |
| 20 | Ed Carpenter | Indianapolis | Menards/Vision Racing | Vision Racing | Jeff Britton |
| 22 | Paul Tracy | Scarborough, Ontario | Subway/Vision | Vision Racing | Derrick Walker |
| 23 | Townsend Bell | San Luis Obispo, Calif. | Dreyer & Reinbold William Rast | Dreyer & Reinbold Racing | Robbie Buhl |
| 25 | Marty Roth | Toronto | Roth Racing | Roth Racing | Duncan Charnell |
| 26 | Marco Andretti | Nazareth, Pa. | Blockbuster | Andretti Green Racing | Paul Harcus |
| 27 | Hideki Mutoh (R) | Tokyo | Formula Dream | Andretti Green Racing | Kim Green |
| 33 | E.J. Viso (R) | Caracas, Venezuela | PDVSA HVM Racing | HVM Racing | Michael Cannon |
| 34 | Jaime Camara (R) | Goiania, Brazil | Sangari | Conquest Racing | Eric Zeto |
| 36 | Enrique Bernoldi (R) | Curitiva, Brazil | Sangari Conquest Racing | Conquest Racing | Brandon Fry |
| 96 | Mario Dominguez (R) | Mexico City | Visit Mexico City/PCM Racing | Pacific Coast Motorsports | Michael Harvey |
| 02 | Justin Wilson (R) | Sheffield, England | McDonald’s Racing Team | Newman/Haas/Lanigan Racing | Mike Talbott |
| 06 | Graham Rahal (R) | New Albany, Ohio | Rexall-Oilers | Newman/Haas/Lanigan Racing | Todd Malloy |