Kozai may refer to: * Kozai-Lidov mechanism, a dynamical phenomenon in celestial mechanics * 3040 Kozai, an asteroid

Persons with the surname Kozai

* Yoshihide Kozai (1928–2018), Japanese astronomer * Kazuteru Kozai (born 1986), Japanese badminton player * Kaori Kozai (born 1963), Japanese singer * Takeshi Kozai (1974–2006), Japanese judoka

See also