List of Grand Prix motorcycle racers: K


 * 🇫🇮 Mika Kallio
 * 🇯🇵 Hideo Kanaya
 * 🇯🇵 Takazumi Katayama
 * 🇯🇵 Daijiro Kato
 * 🇦🇺 Ken Kavanagh
 * 🇺🇸 John Kocinski
 * 🇫🇮 Pentti Korhonen
 * 🇯🇵 Tomoyoshi Koyama
 * 🇩🇪 Ewald Kluge
 * 🇨🇭 Bruno Kneubühler
 * 🇨🇭 Randy Krummenacher
 * 🇯🇵 Hiroaki Kuzuhara