Cognomen ศิริวัฒน์ (ศิริวัฒน์ 
, Siriwat 
, Siriwatn ) , throughout the world, is quite a common family name. The cognomen ศิริวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname, Laos, and Myanmar, where it is a very rare surname. Likewise, ศิริวัฒน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siriwatn, ศิริวัฒน์, Siriwass | Thailand |
| Siriwat | Laos, Malaysia, Thailand, United States, Myanmar |
Seeruwat, Siraiwt, Sirawt, Sirirwat, Siriswat, Siritaweesit, Sirivadh, Sirivaee, Sirivat, Sirivata, Sirivath, Sirivchai, Siriveaw, Sirivedchapantu, Sirivedhin, Siriveht, Siriveth, Siriwad, Siriwam, Siriwant, Siriwap, Siriwapat, Siriward, Siriwart, Siriwas, Siriwasn, Siriwate, Siriwath, Siriwatt, Siriwed, Siriwimat, Siriwish, Sirsiwat, Siruwat, and Sirwat
| ชัยภักดิ์ ศิริวัฒน์ Thai politician, TH (b. 1956) |
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| วารุจ ศิริวัฒน์ Thai politician, TH (b. 1962) |
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