Cognomen ปิยะมิตร์ (ปิยะมิตร์ 
) , all over the world, is an extremely rare surname. The cognomen ปิยะมิตร์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, ปิยะมิตร์ is the forename as well as the last name.