All over the world, ทาย (Thai 
, Guess 
, ทาย 
) is a common dominantly boy's, but seldom female given name. The forename ทาย is habitual in Macao, where it is quite a common unisex name, Vietnam, where it is quite a common predominantly male, but very seldom girly name, and Saudi Arabia, where it is quite a rare dominantly boy's, but infrequently girly name. In absolute terms, this name is the most popular in Vietnam, the United States, and Saudi Arabia. Likewise, ทาย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thai | Australia, Myanmar, Vietnam, United States, Malaysia |
| Guess | Australia, Myanmar, France, United States, Malaysia |
| ทาย | Thailand |
นาดอน, สิทธิ, บุญชวย, แสงรอด, กันยะมูล, เพียงโชคดี, ประครองสุข, เนียมพูล, and โพธาราม