| Karch, Oswald | Kovalainen, Heikki |
| Karthikeyan, Narain | Kozarowitsky, Mikko |
| Katayama, Ukyo | Krakau, Willi |
| Kavanagh, Ken | Krause, Rudolf |
| Kay, Johnny | Kubica, Robert |
| Keegan, Rupert | Kuhnke, Kurt |
| Keizan, Eddie | Kuwashima, Masami |
| Keller, Al | Kvyat, Daniil |
| Kelly, Joe |
| Kennedy, David |
| Kerguen, Jean |
| Kessel, Loris |
| Kessler, Bruce |
| Kiesa, Nicolas |
| King, Jordan |
| Kinnunen, Leo |
| Kladis, Danny |
| Klar, Russ |
| Klenk, Hans |
| Klien, Christian |
| Kling, Karl |
| Klodwig, Ernst |
| Knepper, Ray |
| Kobayashi, Kamui |
| Koinigg, Helmuth |