Surname Setiu (Setiu 
) , worldwide, is a very rare family name. The cognomen Setiu is habitual in Malaysia, where it is a rare surname, New Zealand, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Malaysia, Spain, and Nigeria. Very seldom, Setiu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Setiu | Spain, Malaysia, Australia, Nigeria, India |