Last name บุญชาย (บุญชาย 
) , all around the world, is a very rare family name. The last name บุญชาย is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More frequently, บุญชาย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| บุญชาย | Thailand |