Stefy Bau is an Italian former professional motocross and supercross racer.

After a career-ending injury in 2005, Stefy became the General Manager of the newly established FIM Fédération Internationale de Motocyclisme Women's World Motocross Championship.

Bau is also a member of the CFM (Women Commission inside the FIM Fédération Internationale de Motocyclisme).

[1] Bau is considered to be one of the fastest women motocross racers in the world.

[citation needed] At the end on 2019 she arranged for Zimbabwean motocross rider Tanya Muzinda and her family to move to Florida and she became her manager.