Chuo University (中央大学, Chūō Daigaku, lit. central university), commonly referred to as Chuo (中央) or Chu-Dai (中大), is a private flagship research university in Tokyo, Japan.

Rikkyo University (立教大学, Rikkyō daigaku), also known as Saint Paul's University, is a private university, in Ikebukuro, Tokyo, Japan.

Meiji University (明治大学, Meiji Daigaku), abbreviated as Meiji (明治) or Meidai (明大), is a private research university located in the heart of Tokyo, Chiyoda City, established in 1881.

Sophia University, also known by its Japanese name 上智大学 (Jōchi Daigaku), is a private research university in Japan.

Keio University (慶應義塾大学, Keiō Gijuku Daigaku), abbreviated as Keio (慶應) or Keidai (慶大), is a private research university located in Minato, Tokyo, Japan.

Waseda University (早稲田大学, Waseda Daigaku), abbreviated as Sōdai (早大), is a private research university in Shinjuku, Tokyo, founded in 1882.