Kokushikan University (国士舘大学, Kokushikan Daigaku) is a private university in Setagaya, Tokyo, Japan.

The basic origins of Kokushikan University lie in the Kokushikan private academy which was founded in Tokyo's Azabu District in 1917, during the Taisho period. Kokushikan's 146,000 graduates are active in all spheres of society.