Family name Erai (Era 
, Ерай 
, Erai 
) , in the entire world, is a common last name. The surname Erai is habitual in Albania, where it is quite a common surname, Brunei, where it is quite a rare surname, and Philippines. Measured by absolute frequency, this name is the most popular in India, Bangladesh, and Philippines. More prevalently, Erai is the forename as well as the last name.