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Family name Sittisuk (สิทธิ์ศักดิ์ , Sittisuk
, สิทธิสุข
) , worldwide, is a rare cognomen. The last name Sittisuk is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, Sittisuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สิทธิศุข, สิทธิสุข, สิทธิ์ศักดิ์ | Thailand |
| Sittisuk | United States, Thailand |