Surname Silviia (Силвия 
, Сильвия 
, Silviia 
) , in all the world, is a rare last name. The last name Silviia is characteristic of Bulgaria, where it is quite a rare surname, Kyrgyzstan, where it is a very rare surname, and Indonesia. In absolute terms, this name is the most popular in Bulgaria, Indonesia, and Russia. More frequently, Silviia is the forename as well as the last name.