Family name Phimchay (Phimchay 
) , around the globe, is a rare cognomen. The surname Phimchay is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname. More frequently, Phimchay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phimchay | United States, Laos, Thailand |