Cognomen Phiya (Phiya 
, โพธิยะ , โพธิญาณ์ ) , around the world, is a rare family name. The cognomen Phiya is habitual in Thailand, where it is a rare surname, Malaysia, where it is an extremely rare surname, and South Africa. Measured by absolute frequency, the name is most common in Thailand, India, and South Africa. Likewise, Phiya is the forename as well as the last name.