Quentin Mahauden (born 12 March 2001) is a Belgian karateka.

He won one of the bronze medals in the men's kumite 75 kg event at the 2023 European Games held in Poland.

He also won a bronze medal at the 2023 European Karate Championships held in Guadalajara, Spain.

Quentin Mahauden is a gold medalist in kumite in the under 68kg category at the 2018 Summer Youth Olympics in Buenos Aires, Argentina.

[1] He is a bronze medalist in the under 75 kg category at the 2023 European Championships in Guadalajara, Mexico.