Cognomen Phiu (Phiu 
) , all over the world, is a very rare last name. The last name Phiu is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare surname, Vietnam, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in South-eastern Asia, particularly Indonesia, Vietnam, and Thailand. Likewise, Phiu is the forename as well as the last name.