Surname Vyachyslav (Вячислав 
, Виачислав , Vyachyslav 
) , worldwide, is a very rare family name. The surname Vyachyslav is habitual in Armenia, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Russia, where it is an extremely rare surname. Much more frequently, Vyachyslav is the forename as well as the last name.