All over the world, กลย์ธัช (กลย์ธัช 
) is a very rare principally boy's, but very seldom female first name. The first name กลย์ธัช is habitual in South-eastern Asia, particularly Thailand, where it is a very rare predominantly male, but very seldom female name.
ชัยศิริ, อัศวสุธีรกุล, and วงศ์วิทยานนท์