Last name Walentyn (Валентин 
, Walentyn 
) , around the world, is quite a rare family name. The cognomen Walentyn is habitual in Kyrgyzstan, where it is quite a common surname, Armenia, and Moldova, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Russia, Kyrgyzstan, and Belarus. Much more frequently, Walentyn is the forename as well as the last name.