All over the world, เทียนรัตน์ (Tianrat 
, Tienrat , เทียนรัตน์ ) is a very rare mostly female, but seldom boy's first name. The forename เทียนรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare dominantly female, but uncommonly boy's name. More prevalently, เทียนรัตน์ is the last name as well as the forename.