Throughout the world, พิรวิทย์ (พิรวิทย์ 
) is a very rare mostly male, but uncommonly female forename. The forename พิรวิทย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare dominantly masculine, but uncommonly girly name.
| VARIANT | COUNTRY |
|---|---|
| พิรวิทย์ | Thailand |