Ken Roczen (born 29 April 1994 in Mattstedt, Germany) is a German born professional motocross and supercross racer currently competing in the AMA Professional Motocross and Supercross series.
He is an MX2-class Motocross World Champion, Motocross des Nations winner, 250-class west coast Supercross champion, 450-class Monster Energy cup winner, and two time 450-class US Motocross champion.