Surname Janjaruswattana (Janjaruswattana 
) , in the entire world, is a very rare last name. The surname Janjaruswattana is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Janjaruswattana | Thailand |
Surachai, Nannalin, and Natthanicha