Family name Duad (Duad 
) , globally, is a rare last name. The surname Duad is characteristic of Malaysia, where it is a rare surname, Philippines, and Ireland. Not in comparison with a country's population, it most frequently occurs in Philippines, Malaysia, and Pakistan. Very seldom, Duad is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duad | Philippines, Malaysia, Pakistan, India, Indonesia |