Globally, Будаи (Budai 
, Buday 
, Boudai 
) is quite a common epicene given name. The first name Будаи is habitual in Hungary, where it is quite a rare unisex name, India, where it is a rare unisex name, and Romania, where it is a rare boy's name. Not in comparison with a country's population, it is commonest in India, Indonesia, and Hungary. Likewise, Будаи is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Budai | Japan, Romania, Philippines, Hungary, India |
| Buday | Romania, Philippines, Hungary, India, Slovakia |
| Boudai | Algeria, Kuwait, United States, India, France |
| Будаи | Russia |