Savannah Rose Marshall is a British professional boxer. She has held world championships in two weight classes: the undisputed and
Ring magazine female super-middleweight title since July 2023; and the World Boxing Organization (WBO) female middleweight title from 2020 to 2022. As an amateur, she became the first British female world champion after securing gold at the 2012 World Championships. She has been nicknamed as the 'Silent Assassin' due to a combination of her shyness and her multiple knockout wins. As of October 2022, she was ranked the world's second best active female middleweight by BoxRec and by
The Ring.