Natsume Yoshinobu (夏目 吉信?) (1517–1573) was a Japanese samurai of the Sengoku period who served the Matsudaira clan (later known as the Tokugawa clan). When Tokugawa forces had to retreat at the Battle of Mikatagahara, Natsume charged into enemy ranks declaring himself to be Ieyasu; he was then killed in battle.