Family name Piranun (Piranun 
) , globally, is an extremely rare surname. The cognomen Piranun is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more frequently, Piranun is the forename as well as the last name.
Somtit, Kongviriyakittikul, Tongwattananun, Kongwiriyakittikul, Chantawiroj, Suwanthaicharreon, Suwanthaichareon, Hongchookiat, Rattanakul, Chantakart, Srisaranyakul, Pattarakijsakulchai, Jirasatianpanit, Jeetanun, Piradetpaopong, Kraimoon, Sriwarom, Takhamnin, Pumwichien, Promwun, Naksri, Bhetra, Buntad, Juntapoon, and Thongwatthananun