In the entire world, Kadai (Kadai 
, Кадай 
) is quite a rare primarily male, but very seldom girly first name. The given name Kadai is habitual in Nigeria, where it is quite a rare predominantly boy's, but very infrequently girly name, Japan, where it is quite a rare male name, and Algeria, where it is a very rare male name. In absolute terms, it is commonest in Nigeria, Japan, and India. Very seldom, Kadai is the last name as well as the forename.