Globally, ปิยะวัช (Piyawat 
, ปิยะวัช ) is a rare masculine first name. The forename ปิยะวัช is habitual in South-eastern Asia, particularly Thailand, where it is a rare masculine name. Much less frequently, ปิยะวัช is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Piyawat | China, Malaysia, Australia, United States, Thailand |
| ปิยะวัช | Thailand |