Cognomen Kiliya (Kiliya 
) , in the world, is a rare last name. The last name Kiliya is characteristic of Tanzania, where it is a rare surname, Nigeria, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Tanzania, Nigeria, and India. More prevalently, Kiliya is the forename as well as the last name.