Cognomen ธไนศวรรย์ (ธไนศวรรย์ 
, Thanaisawan 
) , in the entire world, is a very rare surname. The family name ธไนศวรรย์ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. More frequently, ธไนศวรรย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ธไนศวรรย์ | Thailand |
| Thanaisawan | United States, Thailand |