Mitogaku (水戸学) refers to a school of Japanese historical and Shinto studies that arose in the Mito Domain (modern-day Ibaraki Prefecture).

Among scholars gathered for the project were Asaka Tanpaku (1656–1737), Sassa Munekiyo (1640–1698), Kuriyama Senpō (1671–1706), and Miyake Kanran (1673–1718).

Under the influence of Ming loyalist thinker Zhu Shunshui (1600-1682), the fundamental approach of the project was Neo-Confucianist, based on the view that historical development followed moral laws.

The Dai Nihon-shi thus became a history of Japan as ruled by the emperors and emphasized respect for the imperial court and Shinto deities.

The Mito-shi Gakkai of Mito city, Ibaraki prefecture, is undertaking research into the historical and ideological aspects of Mitogaku.