>
All over the world, Sín (秦 , Signe , Sín ) is a common unisex forename. The first name Sín is habitual in Northern Europe, particularly Denmark, where it is quite a common girly name, Latvia, where it is quite a common primarily feminine, but very seldom boy's name, and Sweden, where it is quite a common female name. Not in comparison with a country's population, it is commonest in China, the United States, and Sweden. Much more frequently, Sín is the last name as well as the forename.
Sín is also a name for the fictitious and mythical characters: Signe , the theatrical character in the play "Swanwhite" and Signe , the legendary Finnish princess.