Family name ตฤณวรรธน์ (Thinnawat 
, ตฤณวรรธน์ ) , around the globe, is an extremely rare last name. The cognomen ตฤณวรรธน์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, ตฤณวรรธน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thinnawat | United States, Thailand, China |
| ตฤณวรรธน์ | Thailand |
จิรมนัสวงศ์, and ปิติพัฒน์จรัส