Last name Xain (Xain 
, Хаин 
) , in the world, is a rare family name. The last name Xain is characteristic of Maldives, where it is quite a rare surname, Iraq, where it is a rare surname, and Russia. Measured by absolute frequency, it is commonest in Russia, Myanmar, and Iraq. Likewise, Xain is the forename as well as the last name.