Around the globe, สนธิวัฒน์ (สนธิวัฒน์ 
, Sontiwat , Sonthiwat 
) is a very rare boy's forename. The forename สนธิวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare male name. Also, สนธิวัฒน์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sontiwat, สนธิวัฒน์, Sonthayawat | Thailand |
| Sonthiwat | United States, Thailand |