In the entire world, Kayama (Kayama 
, 香山 , かやま) is quite a rare unisex forename. The first name Kayama is habitual in India, where it is a rare dominantly feminine, but uncommonly masculine name, Nigeria, where it is a rare mostly masculine, but seldom female name, and China, where it is a rare primarily male, but very infrequently female name. Also, Kayama is the last name as well as the forename.