Baron Fisher, of Kilverstone in the County of Norfolk, is a title in the Peerage of the United Kingdom. It was created in 1909 for the noted naval reformer Admiral of the Fleet Sir John Fisher. His son Cecil Fisher, the second Baron, was the adoptive heir of Josiah Vavasseur (1834-1908), an arms manufacturer. Vavasseur left part of his enormous estate to Fisher on the condition that he adopted the Vavasseur name. Fisher assumed the additional surname of Vavasseur in 1909 by Royal licence. As of 2017 the title is held by the latter's grandson, the fourth Baron, who succeeded in 2012.