Surname Piyanut (ปิยะนุช 
, ปิยนุช , Piyanut 
) , across the world, is a very rare last name. The family name Piyanut is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is a very rare surname. Predominantly, Piyanut is the forename as well as the last name.
Pinta, Puttakul, Wongchai, Metanuntavasin, Sangountanawit, Chaiwanna, Chaiduang, Khunsawat, Kittilukkana, Panichkul, Prasoetlap, Jabjainay, Thongyuen, Musikapant, Charavajchasarn, Keawseesod, Piyavisetpat, Puangmanee, Khwanmueang, Kittivoraphongkij, Ratanakoset, Thitichotkirkchai, Pintasiri, Kaowpong, Chuseang, Srilikhit, Bannob, Keachu, Pannit, Pimsri, Phosri, Nooyok, Nonpho, Mudleah, Saratee, Suparut, Kaewdoungtien, Buakhae, Poolviwat, Ruamyod, Detsathit, Gritong, Jitnoul, Thawang, Namchoo, Yomkhwanmuang, Sampaotong, Surawanwijit, Patisup, and Rattanaburee