All over the world, สุทธิรัตน์ (สุทธิรัตน์ 
, Suttirat 
, Sutthirat 
, along with others...) is quite a rare gender-neutral first name. The forename สุทธิรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare epicene name. Likewise, สุทธิรัตน์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| สุทธิรัตน์, Suttirut | Thailand |
| Suttirat | United States, Thailand |
| Sutthirat | United Kingdom, Malaysia, United States, Thailand |
| Suthirat | India, United States, Thailand |