Thoisy may refer to:
People
Geoffroy de Thoisy, Burgundian naval commander involved in Philip the Good’s Crusade endeavors in the 1440s. Noël Patrocles de Thoisy (died 1671), early governor general of the French Antilles
Places
Thoisy-la-Berchère, commune in the Côte-d'Or department in eastern France Thoisy-le-Désert commune in the Côte-d'Or department in eastern France