Surname ทรงเสถียร (ทรงเสถียร 
) , in the entire world, is an extremely rare cognomen. The family name ทรงเสถียร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ทรงเสถียร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ทรงเสถียร | Thailand |