Family name Rahya (Rahya 
, รายา 
, Рахья 
) , around the globe, is a rare cognomen. The cognomen Rahya is habitual in Thailand, where it is a rare surname, Indonesia, where it is a very rare surname, and Ethiopia. Measured by absolute frequency, the name is most common in Indonesia, India, and Thailand. Likewise, Rahya is the forename as well as the last name.