Hideaki Kase (加瀬 英明, Kase Hideaki?, born December 22, 1936) is a Japanese diplomatic critic.
Kase is the Chairman of Society for the Dissemination of Historical Fact.
In an interview with BBC journalist Bethan Jinkinson, Kase said: "The majority of our people believe that Japan was forced into war by the United States. America was making unreasonable demands upon us. So we were fighting a war of national self-defence".
He is an assenter of "The Truth about Nanjing(movie)."