| Car No. | Driver | Team | Engine | Rounds |
|---|---|---|---|---|
| 1 | Josef Newgarden | Team Penske | Chevy | Full Season |
| 2 | Scott McLaughlin | Team Penske | Chevy | GMR GP |
| 3 | Helio Castroneves | Team Penske | Chevy | Indy 500 |
| 4 | Charlie Kimball | AJ Foyt Racing | Chevy | Full Season |
| 5 | Patricio O'Ward | Arrow McLaren SP | Chevy | Full Season |
| 7 | Oliver Askew | Arrow McLaren SP | Chevy | Full Season |
| 8 | Marcus Ericsson | Chip Ganassi Racing | Honda | Full Season |
| 9 | Scott Dixon | Chip Ganassi Racing | Honda | Full Season |
| 10 | Felix Rosenqvist | Chip Ganassi Racing | Honda | Full Season |
| 12 | Will Power | Team Penske | Chevy | Full Season |
| 14 | Tony Kanaan | AJ Foyt Racing | Chevy | Ovals |
| 14 | Sebastien Bourdais | AJ Foyt Racing | Chevy | STP/BAR/LB/POR |
| 14 | Dalton Kellett | AJ Foyt Racing | Chevy | COT/GMR/DET/RA/TOR/MOH/LAG |
| 15 | Graham Rahal | Rahal Letterman Lanigan Racing | Honda | Full Season |
| 18 | Santino Ferrucci | Dale Coyne Racing/Vasser-Sullivan | Honda | Full Season |
| 20 | Ed Carpenter | Ed Carpenter Racing | Chevy | Ovals |
| 20 | Conor Daly | Ed Carpenter Racing | Chevy | Road/Street |
| 21 | Rinus VeeKay | Ed Carpenter Racing | Chevy | Full Season |
| 22 | Simon Pagenaud | Team Penske | Chevy | Full Season |
| 24 | Sage Karam | Dreyer & Reinbold Racing | Chevy | Four Races |
| 26 | Zach Veach | Andretti Autosport | Honda | Full Season |
| 27 | Alexander Rossi | Andretti Autosport | Honda | Full Season |
| 28 | Ryan Hunter-Reay | Andretti Autosport | Honda | Full Season |
| 29 | James Hinchcliffe | Andretti Autosport | Honda | Both IMS races & Texas |
| 30 | Takuma Sato | Rahal Letterman Lanigan Racing | Honda | Full Season |
| 31 | Felipe Nasr | Carlin | Chevy | COTA Test & St. Pete |
| 31 | Sergio Sette Camara | Carlin | Chevy | COTA Test |
| 32 | TBA | Juncos Racing | Chevy | TBA |
| 45 | Spencer Pigot | Rahal Letterman Lanigan Racing/Citrone/Buhl Autosport | Honda | IMS Races |
| 55 | Alex Palou | Dale Coyne Racing/Team Goh | Honda | Full Season |
| 59 | Mac Chilton | Carlin | Chevy | Road/Street/Indy 500 |
| 59 | Conor Daly | Carlin | Chevy | Non-IMS Ovals |
| 60 | Jack Harvey | Meyer Shank Racing/Andretti Technologies | Honda | Full Season |
| 66 | Fernando Alonso | Arrow McLaren SP | Chevy | Indy 500 |
| 81 | Ben Hanley | DragonSpeed | Chevy | St. Pete |
| 88 | Colton Herta | Andretti Autosport/Harding Steinbrenner Racing | Honda | Full Season |
| 98 | Marco Andretti | Andretti Autosport/Bryan Herta Autosport/Marco Andretti | Honda | Full Season |
| TBA | Conor Daly | Ed Carpenter Racing | Chevy | Indy 500 |
| TBA | Dalton Kellett | AJ Foyt Racing | Chevy | Indy 500 |
2020 Indy Lights Presented by Cooper Tires – 2020 LIVERY PAGES COMING SOON
| Car No. | Driver | Team | Rounds |
|---|---|---|---|
| 5 | Toby Sowery | Belardi Auto Racing | Full Season |
| 10 | Rasmus Lindh | Belardi Auto Racing | Full Season |
| 11 | Antonio Serravalle | HMD Motorsports | First 5 Weekends |
| 27 | Robert Megennis | Andretti Autosport | Full Season |
| 28 | Kyle Kirkwood | Andretti Autosport | Full Season |
| 48 | Tristan Charpentier | Andretti Autosport | STP/BAR/GPI |
| 55 | Santiago Urruita | HMD Motorsports | Full Season |
| 68 | Danial Frost | Andretti Autosport | Full Season |
| 79 | David Malukas | HMD Motorsports | Full Season |
| 90 | Nikita Lastochkin | Exclusive Autosport | Full Season |
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