Cognomen Шаин (Shain 
, Shayn 
, Шаин 
) , in the world, is a common family name. The family name Шаин is habitual in Maldives, where it is quite a common surname, Croatia, where it is quite a rare surname, and North Macedonia. Measured by absolute frequency, it most frequently occurs in Myanmar, the United States, and Bangladesh. More prevalently, Шаин is the forename as well as the last name.