Last name บุญญาเสถียร (บุญญาเสถียร 
, Boonyasatean , Boonyasthian ) , all around the world, is a very rare family name. The surname บุญญาเสถียร is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| บุญญาเสถียร, Bunyasathian, Boonyasatean, Boonyasthian | Thailand |
Boonyasataen, Boonyasathian, Boonyasathien, Boonyassatian, Bunyatsathian, and Bunyatsathien