Around the globe, กุศลศักดิ์ (Charusak 
, กุศลศักดิ์ , Kusolsak ) is a very rare primarily masculine, but very seldom female first name. The first name กุศลศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare predominantly masculine, but very seldom feminine name. Likewise, กุศลศักดิ์ is the last name as well as the forename.