IndyCar 2020 GP de Indianápolis
| # | Piloto | Equipe | Carro | Motor | Pneus | |
|---|---|---|---|---|---|---|
| 1 | Josef Newgarden | Team Penske | Dallara DW12 | Chevrolet | Firestone | |
| 4 | Charlie Kimball | A.J. Foyt Enterprises | Dallara DW12 | Chevrolet | Firestone | |
| 5 |  Patricio O'Ward | Schmidt Peterson Motorsports | Dallara DW12 | Chevrolet | Firestone | |
| 7 | Oliver Askew | Schmidt Peterson Motorsports | Dallara DW12 | Chevrolet | Firestone | |
| 8 |  Marcus Ericsson | Chip Ganassi Racing | Dallara DW12 | Honda | Firestone | |
| 9 |  Scott Dixon | Chip Ganassi Racing | Dallara DW12 | Honda | Firestone | |
| 10 | Felix Rosenqvist | Chip Ganassi Racing | Dallara DW12 | Honda | Firestone | |
| 12 |  Will Power | Team Penske | Dallara DW12 | Chevrolet | Firestone | |
| 14 |  Dalton Kellett | A.J. Foyt Enterprises | Dallara DW12 | Chevrolet | Firestone | |
| 15 | Graham Rahal | Rahal Letterman Lanigan Racing | Dallara DW12 | Honda | Firestone | |
| 18 | Santino Ferrucci | Dale Coyne Racing | Dallara DW12 | Honda | Firestone | |
| 20 | Conor Daly | Ed Carpenter Racing | Dallara DW12 | Chevrolet | Firestone | |
| 21 |  Rinus Kalmthout | Ed Carpenter Racing | Dallara DW12 | Chevrolet | Firestone | |
| 22 |  Simon Pagenaud | Team Penske | Dallara DW12 | Chevrolet | Firestone | |
| 24 | Sage Karam | Dreyer & Reinbold Racing | Dallara DW12 | Chevrolet | Firestone | |
| 26 | Zach Veach | Andretti Autosport | Dallara DW12 | Honda | Firestone | |
| 27 | Alexander Rossi | Andretti Autosport | Dallara DW12 | Honda | Firestone | |
| 28 | Ryan Hunter-Reay | Andretti Autosport | Dallara DW12 | Honda | Firestone | |
| 29 | James Hinchcliffe | Andretti Autosport | Dallara DW12 | Honda | Firestone | |
| 30 |  Takuma Sato | Rahal Letterman Lanigan Racing | Dallara DW12 | Honda | Firestone | |
| 31 |  Felipe Nasr |  Carlin | Dallara DW12 | Chevrolet | Firestone | |
| 45 | Spencer Pigot | Rahal Letterman Lanigan Racing with Citrone/Buhl A | Dallara DW12 | Honda | Firestone | |
| 55 |  Alex Palou | Dale Coyne Racing with Team Goh | Dallara DW12 | Honda | Firestone | |
| 59 | Max Chilton | Carlin | Dallara DW12 | Chevrolet | Firestone | |
| 60 | Jack Harvey | Michael Shank Racing | Dallara DW12 | Honda | Firestone | |
| 66 | Fernando Alonso | Schmidt Peterson Motorsports | Dallara DW12 | Chevrolet | Firestone | |
| 81 | Ben Hanley | DragonSpeed | Dallara DW12 | Chevrolet | Firestone | |
| 88 | Colton Herta | Andretti Harding Steinbrenner Autosport | Dallara DW12 | Honda | Firestone | |
| 98 | Marco Andretti | Andretti Herta Autosport with Marco & Curb-Agajani | Dallara DW12 | Honda | Firestone |