Surname Piyakun (ปิยะกุล 
, ปิยกุล , ปิยากุล ) , all over the world, is a rare family name. The family name Piyakun is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More prevalently, Piyakun is the forename as well as the last name.
Sonwai, Piyatrakoon, Kositsuriyamanee, Chantaboon, Bunyasrirat, Sripruektisothorn, Mueankhiri, Tepjuntuk, Jantamat, Panpanid, Puttisawasdikun, Muankhiri, Jompahorm, Dougjun, Phatpao, Kontien, Buntarphet, Artsing, Sisuksai, Mabuntham, Kitomnurypron, Tapaeng, and Puttisawatdikun