Cognomen Sittichaya (Sittichaya 
) , around the globe, is a very rare last name. The surname Sittichaya is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Sittichaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sittichaya | Thailand |
| wisut sittichaya Thai entomologist, TH |
|