Last name Roskyn (Roskyn 
, Роскин 
) , in the entire world, is a rare cognomen. The cognomen Roskyn is characteristic of Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. Measured by absolute frequency, the name is most common in Russia, Belarus, and Argentina. Very seldom, Roskyn is the forename as well as the last name.