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Cognomen Sittiarsa (Sittiarsa
) , across the world, is a very rare last name. The surname Sittiarsa is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Sittiarsa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sittiarsa | Philippines, Thailand |
Supan, Samart, Pannaporn, Pongsarun, and Praphawarin