Cognomen Kulaya (กุลยา 
, Kulaya 
) , throughout the world, is quite a rare surname. The cognomen Kulaya is characteristic of Tanzania, where it is quite a rare surname, Thailand, where it is a very rare surname, and Malaysia. In absolute terms, this name is the most popular in Tanzania, Thailand, and the United States. Likewise, Kulaya is the forename as well as the last name.