Surname Gilya (Gilya 
, Гиля 
, גיליה ) , throughout the world, is quite a rare family name. The cognomen Gilya is habitual in Tanzania, where it is quite a rare surname, Ukraine, where it is a very rare surname, and Kyrgyzstan. In absolute terms, it most frequently occurs in Tanzania, India, and Russia. Also, Gilya is the forename as well as the last name.