Surname วิวาท (Wiwat 
, Vistawat , วิวาท ) , around the globe, is a rare family name. The cognomen วิวาท is characteristic of Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and Canada. Not in comparison with a country's population, it is commonest in Thailand, China, and Indonesia. Much more frequently, วิวาท is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wiwat | Indonesia, China, Laos, Taiwan, Thailand |
| Vistawat, วิวาท | Thailand |