Drivers - I
A B C D E F G H I J K L M N O P Q R S T U V W Y Z
| Driver | Nationality | Years Active |
| Charles Illingsworth | USA | 1909 |
| Callum Ilott | GBR | 2021-24 |
| Harris Insinger | USA | 1934-35 |
| Ralph Ireland | USA | 1910-11 |
| Gary Irvin | USA | 1977-78, 82-83 |
| Guy Irwin | USA | 1909 |
Drivers of undetermined birth place are assumed to be American