Yvone Magalhães Duarte (born 26 August 1963 in Boa Vista, Brazil) is a 7th degree Brazilian jiu-jitsu black belt practitioner and instructor. The first woman to achieve the rank of black belt in Brazilian jiu-jitsu, Duarte is considered the martial art's foremost female pioneer. In 2021 she became the highest-ranked women after reaching the 7th degree Coral belt.