In the entire world, Sivyy (Sivyy , Сивый ) is an extremely rare unknown gender first name. Much more frequently, Sivyy is the last name as well as the forename.
Сивыы
Andrey, Viktor, and Yevgeniy
, Сивый 
) is an extremely rare unknown gender first name. Much more frequently, Sivyy is the last name as well as the forename.