Surname บุญจักร (บุญจักร 
, Bunchak 
, Boonchak ) , in all the world, is a rare cognomen. The surname บุญจักร is habitual in Thailand, where it is a rare surname, Czechia, and Russia, where it is an extremely rare surname. In absolute terms, this name is the most popular in Thailand, Czechia, and the United States. Very seldom, บุญจักร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| บุญจักร, Boonchak | Thailand |
| Bunchak | Thailand, Czechia, United States, Russia |