Last Update Apr. 6, 2021
| 2021 IndyCar Silly Season Page |
||||||
| Team | Engine | No. | Driver | Primary Sponsor | Rating | Comment |
| AJ Foyt Racing |
Chevy |
4 | Dalton Kellett | K-Line | Fact | Signed |
| 14 | Sebastien Bourdais | TBD | Fact | Signed | ||
| 11 | Charlie Kimball | Tresiba | Fact | Signed Indy Only | ||
| Andretti Autosport |
Honda |
26 |
Colton Herta | Gainbridge | Fact | Signed |
| 27 | Alexander Rossi | NAPA and AutoNation | Fact | Signed | ||
| 28 | Ryan Hunter-Reay | DHL | Fact | Signed | ||
| 88 | James Hinchcliffe | Genesys | Fact | Signed | ||
| 29 | Marco Andretti | US Concrete | Fact | Indy 500 only w/ Harding Steinbrenner | ||
| Arrow McLaren SP | Chevy | 5 | Pato O’Ward | Arrow | Fact | Signed |
| 7 | Felix Rosenqvist | Arrow | Fact | Signed | ||
| 6 | Juan Montoya | TBD | Fact | Indy 500 only | ||
| Carlin Racing | Chevy | 59 | Max Chilton | Gallagher Insurance | Fact | Road Courses only |
| TBD | TBD | Speculation | Carlin wants to run a 2nd car | |||
| Chip Ganassi Racing | Honda | 8 | Marcus Ericsson | Huski Chocolate | Fact | Signed |
| 9 | Scott Dixon | PNC Bank | Fact | Signed | ||
| 10 | Alex Palou | NTT Data | Fact | Signed | ||
| 48 | Tony Kanaan | NTT Data? | Fact | Signed Ovals Only | ||
| Jimmie Johnson | Carvana | Fact | Signed. Road Courses Only | |||
| Dale Coyne Racing w/Vasser Sullivan | Honda | 18 | Ed Jones | Sealmaster | Fact | Signed |
| Dale Coyne Racing w/Rick Ware Racing | Honda | 51 | Pietro Fittipaldi | TBD | Fact | 4 Oval Races |
| 51 | Romain Grosjean | Guaranteed Rate | Fact | No Ovals | ||
| 52 | Cody Ware | TBD | Fact | Indy 500 + more | ||
| Dreyer Reinbold | Chevy | 24 | Sage Karam | Wix | Strong | Part-Time |
| 67 | JR Hildebrand | Salesforce | Strong | Indy 500 Only | ||
| Ed Carpenter Racing |
Chevy |
21 | Rinus Veekay | Sonax | Fact | Signed |
| 20 |
Ed Carpenter | US Space Force | Fact | Ovals Only | ||
| Conor Daly | US Air Force | Fact | ||||
| Meyer Shank Racing | Honda | 60 | Jack Harvey | AutoNation | Fact | Signed |
| 06 | Helio Castroneves | TBD | Fact | Partial season | ||
| Paretta Autosport | Chevy | 16 | Simona De Silvestro | Fact | Indy 500 only | |
| Rahal Letterman Lanigan | Honda | 15 | Graham Rahal | United Rentals | Fact | Signed |
| 30 | Takuma Sato | Panasonic, Mi-Jack | Fact | Signed | ||
| 45 | Antonio Felix da Costa |
TBD | Speculation | No word | ||
| Spencer Pigot | HyVee | Speculation | Indy 500 only? | |||
| Team Penske | Chevy | 2 | Josef Newgarden | Hitachi | Fact | Signed |
| 3 | Scott McLaughlin | Shell, PPG | Fact | Signed | ||
| 12 | Will Power | Verizon | Fact | Signed | ||
| 22 | Simon Pagenaud | Menards | Fact | Signed | ||
| Top Gun Racing | Chevy | RC Enerson | US Navy? | Fact | Indy 500 Only | |