Cognomen Dualy (Dualy 
) , across the world, is a very rare surname. The family name Dualy is habitual in Malaysia, where it is a very rare surname, Venezuela, and Philippines, where it is an extremely rare surname. Likewise, Dualy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dualy | Malaysia, Philippines, United States, Brazil, Venezuela |