In the world, วิริยา (วิริยา 
, Viriya 
, Wiriya 
) is quite a common unisex forename. The forename วิริยา is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare mostly female, but uncommonly male name, Indonesia, where it is a rare epicene name, and Myanmar, where it is a rare male name. Measured by absolute frequency, it is the most numerous in Thailand, India, and Indonesia. Very seldom, วิริยา is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| วิริยา | Thailand |
| Viriya | Thailand, Indonesia, India, Laos, Myanmar |
| Wiriya | Thailand, Indonesia, India, United States, Myanmar |