Japanese nationalism is a form of nationalism that asserts the belief that the Japanese are a monolithic nation with a single immutable culture, and promotes the cultural unity of the Japanese. Over the last two centuries, it has encompassed a broad range of ideas and sentiments which have been harbored by the Japanese people in relation to their native country, its cultural nature, its political system, and its historical destiny. It is useful to distinguish Japanese cultural nationalism from political or state nationalism, since many forms of cultural nationalism, such as those which are associated with folkloric studies, have been hostile to state-fostered nationalism.

Shōwa Statism is the nationalist ideology associated with the Empire of Japan, particularly during the Shōwa era. It is sometimes also referred to as Emperor-system fascism , Japanese-style fascism or Shōwa nationalism.