Last name Buddayu (Buddayu 
) , around the world, is a very rare cognomen. The surname Buddayu is habitual in Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Buddayu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Buddayu | Thailand, India |