| NOTE: This entry list is automatically generated from this season's results. If not all race results are yet provided this list may be incomplete. |
| # | Class | Driver(s) | Car | Team | Tyres |
|---|---|---|---|---|---|
| 2 | Raphael Matos | Dallara-Honda | Luczo Dragon Ra | Firestone | |
| 3 | Will Power | Dallara-Honda | Team Penske | Firestone | |
| 4 | Dan Wheldon | Dallara-Honda | Panther Racing | Firestone | |
| 5 | Mario Moraes | Dallara-Honda | KV Racing Technology | Firestone | |
| 6 | Ryan Briscoe | Dallara-Honda | Team Penske | Firestone | |
| 7 | Danica Patrick | Dallara-Honda | Andretti Green Racing | Firestone | |
| 9 | Scott Dixon | Dallara-Honda | Target Chip Ganassi Racing | Firestone | |
| 10 | Dario Franchitti | Dallara-Honda | Target Chip Ganassi Racing | Firestone | |
| 11 | Tony Kanaan | Dallara-Honda | Andretti Green Racing | Firestone | |
| 13 | Ernesto Viso | Dallara-Honda | HVM Racing | Firestone | |
| 14 | Vitor Meira | Dallara-Honda | A.J. Foyt Enterprises | Firestone | |
| 19 | Justin Wilson | Dallara-Honda | Dale Coyne Racing | Firestone | |
| 20 | Ed Carpenter | Dallara-Honda | Vision Racing | Firestone | |
| 21 | Ryan Hunter-Reay | Dallara-Honda | Vision Racing | Firestone | |
| 23 | Darren Manning | Dallara-Honda | Dreyer & Reinbold Racing | Firestone | |
| 24 | Mike Conway | Dallara-Honda | Dreyer & Reinbold Racing | Firestone | |
| 26 | Marco Andretti | Dallara-Honda | Andretti Green Racing | Firestone | |
| 27 | Hideki Mutoh | Dallara-Honda | Andretti Green Racing | Firestone | |
| 34 | Alexandre Tagliani | Dallara-Honda | Conquest Racing | Firestone | |
| 98 | Stanton Barrett | Dallara-Honda | CURB/Agajanian/Team 3G | Firestone | |
| 02 | Graham Rahal | Dallara-Honda | Newman/Haas/Lanigan Racing | Firestone | |
| 06 | Robert Doornbos | Dallara-Honda | Newman/Haas/Lanigan Racing | Firestone |