Cognomen Arphai (Arphai 
) , all around the world, is a very rare family name. The surname Arphai is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Arphai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arphai | India, United States, Thailand |