Surname Sivy (西维 
, Sivy 
, Сивий 
) , in the world, is quite a rare last name. The cognomen Sivy is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Belarus, and Ukraine, where it is a rare surname. In absolute terms, it most frequently occurs in Eastern Europe, particularly Ukraine, Slovakia, and Russia. Likewise, Sivy is the forename as well as the last name.