Globally, Sihin (Sihin 
, สิอิ้น) is quite a rare largely male, but seldom female first name. The forename Sihin is habitual in Ethiopia, where it is quite a rare predominantly boy's, but very seldom feminine name, Indonesia, where it is a very rare boy's name, and the United States, where it is an extremely rare gender-neutral name. In absolute terms, it is the most numerous in Ethiopia, Indonesia, and India. Also, Sihin is the last name as well as the forename.