Last name Zainu (Zainu 
) , all over the world, is quite a rare cognomen. The surname Zainu is characteristic of Western Asia, particularly United Arab Emirates, where it is quite a rare surname, Qatar, and Saudi Arabia, where it is a rare surname. Not in comparison with a country's population, the name is most common in Nigeria, Indonesia, and Saudi Arabia. Likewise, Zainu is the forename as well as the last name.