Last name บุญนำเสถียร (บุญนำเสถียร, Boonnumsathien 
) , globally, is a very rare cognomen. The last name บุญนำเสถียร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Boonnumsathien | Thailand |