Throughout the world, ดอย (Doi 
, Doei 
, ดอย 
) is quite a common mostly masculine, but seldom feminine forename. The given name ดอย is habitual in Japan, where it is quite a rare masculine name, Israel, where it is quite a rare gender-neutral name, and Vietnam, where it is a rare predominantly male, but very infrequently girly name. Not in comparison with a country's population, it is the most numerous in Japan, Vietnam, and India. Likewise, ดอย is the last name as well as the forename.