| Driver | Nationality | Years Active |
| Kyle Kaiser | USA | 2018-19 |
| George Kalen | USA | 1932 |
Tony
Kanaan 
|
BRA | 1998-2023 |
| Sage Karam | USA | 2014-22 |
| Jerry Karl | USA | 1969-85 |
| Bert Karnatz | USA | 1929-31 |
| Tõnis Kasemets | EST | 2006 |
| Edward Kaster | USA | 1917, 19 |
| Iggy Katona | USA | 1949 |
| Keith
Kauffman
|
USA | 1982 |
| Terry Kawell | USA | 1983 |
| Johnny Kay | USA | 1953, 55-56, 59 |
| Ray Keech
|
USA | 1927-29 |
| Rupert Keegan | GBR | 1985-86 |
| Bruce
Keen
|
USA | 1909, 11 |
| Charles Keene | USA | 1914-15 |
| Foxhall Keene | USA | 1910 |
| Tex Keene
|
USA | 1952-53 |
| Pat Keiffer | USA | 1960 |
| Doc Keim | USA | 1938 |
| Al Keller
|
USA | 1952-61 |
| Dalton Kellett | CAN | 2020-22 |
| Howard Kelley | USA | 1955 |
| Jerry Kemp | USA | 1962 |
| Mel Kenealy | USA | 1930 |
| Cap Kennedy | USA | 1914-15 |
| Walt Kennedy | USA | 1982 |
| Mel Kenyon | USA | 1963-74, 76-78, 81 |