Across the world, ثيل (Thel 
, Thiele 
, Thil ) is quite a rare epicene forename. The given name ثيل is characteristic of United Arab Emirates, where it is a rare feminine name, Brazil, where it is a rare masculine name, and Switzerland, where it is a rare epicene name. In absolute terms, it is the most numerous in Brazil, India, and China. More prevalently, ثيل is the last name as well as the forename.