Last name Gajiu (Gajiu 
, Гажиу 
) , in the entire world, is a rare surname. The cognomen Gajiu is characteristic of Moldova, where it is quite a rare surname, Malaysia, where it is a rare surname, and Romania. Measured by absolute frequency, this name is the most popular in Moldova, Russia, and Malaysia. Very seldom, Gajiu is the forename as well as the last name.