Last name Lavyn (Lavyn 
, Лавин 
) , in the world, is a rare family name. The family name Lavyn is characteristic of Russia, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. In absolute terms, it is the most numerous in Russia, Kazakhstan, and the United States. Very seldom, Lavyn is the forename as well as the last name.