Last name สุวัตถิ์ (Suwat 
, สุวัตถิ์ ) , around the world, is a rare cognomen. The last name สุวัตถิ์ is habitual in Thailand, where it is a rare surname, Saudi Arabia, where it is a very rare surname, and Malaysia. In absolute terms, the name is most common in Thailand, Indonesia, and Saudi Arabia. Much more frequently, สุวัตถิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suwat | Saudi Arabia, China, United States, Thailand, Indonesia |
| สุวัตถิ์ | Thailand |