Worldwide, Saiyan (สายยันต์ 
, Saiyan 
, สายยัน ) is quite a rare gender-neutral first name. The given name Saiyan is habitual in Thailand, where it is quite a rare epicene name, Bangladesh, where it is a very rare boy's name, and Indonesia. Not in comparison with a country's population, it is the most numerous in Thailand, India, and Indonesia. Very seldom, Saiyan is the last name as well as the forename.