Surname ศศิร์ธัญ (ศศิร์ธัญ 
) , all over the world, is an extremely rare last name. The family name ศศิร์ธัญ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, ศศิร์ธัญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ศศิร์ธัญ | Thailand |