Surname บุตร์ (Bu 
, บุตร์ 
) , across the world, is a widespread family name. The cognomen บุตร์ is characteristic of Myanmar, where it is quite a common surname, Honduras, and China. Not in comparison with a country's population, it is the most numerous in China, Myanmar, and India. Likewise, บุตร์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bu | Japan, China, Indonesia, India, Myanmar |
| บุตร์ | Thailand |