2009 Full-Time Series Entrants[]
| No | Driver | Sponsor(s) | Team | Chassis | Engine | Tires |
|---|---|---|---|---|---|---|
| 2 | Raphael matos(R) (BRA) | Lilly Diabetes | Vision Racing | Dallara | Honda | Firestone |
| 3 | Helio Castroneves (BRA) | Marlboro (unbranded) | Team Penske | Dallara | Honda | Firestone |
| 4 | Dan Wheldon (GBR) | National Guard/Delphi | Panther Racing | Dallara | Honda | Firestone |
| 06 | Robert Doornbos (R) (NED) | Hole in the Wall Camps | Newman/Haas/Lanigan Racing | Dallara | Honda | Firestone |
| 6 | Ryan Briscoe (AUS) | Marlboro (unbranded) | Team Penske | Dallara | Honda | Firestone |
| 7 | Danica Patrick (USA) | Motorola | Andretti Green Racing | Dallara | Honda | Firestone |
| 9 | Scott Dixon (NZL) | Target | Chip Ganassi Racing | Dallara | Honda | Firestone |
| 10 | Dario Franchitti (SCO) | Target | Chip Ganassi Racing | Dallara | Honda | Firestone |
| 11 | Tony Kanaan (BRA) | 7-Eleven | Andretti Green Racing | Dallara | Honda | Firestone |
| 12 | Will Power (BRA) | Symantec | Team Penske | Dallara | Honda | Firestone |
| 14 | Vitor Meira (BRA) | ABC Supply Company | A.J. Foyt Enterprises | Dallara | Honda | Firestone |
| 20 | Ed Carpenter (USA) | Menards | Vision Racing | Dallara | Honda | Firestone |
| 27 | Hideki Mutoh (JPN) | Panasonic/Formula Dream | Andretti Green Racing | Dallara | Honda | Firestone |
| 13 | E.J. Viso (VEN) | PDVSA | HVM Racing | Dallara | Honda | Firestone |
| 36 | Alex Tagliani (CAN) | Sangari | Conquest Racing | Dallara | Honda | Firestone |
| 02 | Graham Rahal (USA) | ING Group/Red Bull | Newman/Haas/Lanigan Racing | Dallara | Honda | Firestone |
| 98 | Stanton Barrett (R) (USA) | Interush | Curb/Agajanian/3G Racing | Dallara | Honda | Firestone |