Cognomen Piyan (Piyan 
, Пиян 
) , around the globe, is quite a rare last name. The family name Piyan is characteristic of Indonesia, where it is a rare surname, Malaysia, and Bangladesh, where it is a very rare surname. Measured by absolute frequency, the name is most common in Indonesia, India, and Bangladesh. Likewise, Piyan is the forename as well as the last name.