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In the entire world, Sittisak (สิทธิศักดิ์ , Sittisak
) is a common predominantly boy's, but very seldom girly first name. The first name Sittisak is habitual in South-eastern Asia, particularly Thailand, where it is quite a common principally masculine, but very infrequently female name. Very seldom, Sittisak is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| สิทธิศักดิ์ | Thailand |
| Sittisak | United Kingdom, United States, Rwanda, Thailand |
Ситтисак, สิทธิศัก, สิทธิศัก์, and สิทธิ์ศักดิ์