Cognomen ปิยะเมธ (ปิยะเมธ 
, Piyamet , Piyamyth) , in the world, is an extremely rare surname. The family name ปิยะเมธ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, ปิยะเมธ is the forename as well as the last name.