Nick Kapur is a historian of Japan and US-Japan relations. His current research focuses on Japan in the 1960s, with particular emphasis on the impact of the massive 1960 protests against the US-Japan Security Treaty on US-Japan relations and Japanese politics, society, and culture.

His other research interests include 20th century US foreign policy, Japanese internment during World War II, the history of the Japanese education system, suicide in Japan since the Meiji period, the history of Imperialism as an intellectual construct, and US and Japanese environmental history.