Cognomen Ямая (Yamaya 
, 山谷 , Ямая 
) , all over the world, is a rare surname. The surname Ямая is characteristic of Tanzania, where it is a rare surname, Malaysia, where it is a very rare surname, and New Zealand. Measured by absolute frequency, it is commonest in Tanzania, Brazil, and China. Also, Ямая is the forename as well as the last name.