Last name Hiểu (Hiểu 
) , around the world, is a rare surname. The family name Hiểu is characteristic of South-eastern Asia, particularly Vietnam, where it is a rare surname. Also, Hiểu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hiểu | Vietnam |
| phạm văn hiểu VN (b. 1964) |
|
|
| ngọ duy hiểu VN (b. 1973) |
|