In all the world, หทัยรัตน (หทัยรัตน 
) is a very rare dominantly feminine, but seldom boy's given name. The forename หทัยรัตน is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare mostly feminine, but infrequently boy's name.
คุณศรี, เพิมลาภ, and พิริยะเวชากุล