Throughout the world, ดุ๋ย (Dui 
, ดุ๋ย) is quite a rare epicene given name. The forename ดุ๋ย is characteristic of Indonesia, where it is a rare epicene name, India, where it is a very rare gender-neutral name, and Vietnam, where it is a very rare principally male, but scarcely feminine name. Measured by absolute frequency, this name is the most popular in India, Indonesia, and Bangladesh. Likewise, ดุ๋ย is the last name as well as the forename.