Cognomen Wallay (Wallay 
) , in the world, is a very rare surname. The family name Wallay is characteristic of Philippines, where it is a very rare surname, Israel, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Philippines, the United Kingdom, and Malaysia. Very seldom, Wallay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wallay | Philippines, United States, United Kingdom, India, Malaysia |