Globally, Mysyn (Mysyn , Мысин , Мисин ) is an extremely rare girly given name. Much more prevalently, Mysyn is the last name as well as the forename.
מיסין, מישין, and ميسين
Torrejas
, Мысин 
, Мисин 
) is an extremely rare girly given name. Much more prevalently, Mysyn is the last name as well as the forename.