Last name Giàu (Giau 
, Giàu ) , throughout the world, is quite a rare cognomen. The last name Giàu is characteristic of Vietnam, where it is quite a rare surname, Malaysia, and Italy, where it is a rare surname. Also, Giàu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giau | Italy, Malaysia, France, Vietnam, United States |
| Giàu | Vietnam |
| ngọc giàu Vietnamese musician, VN (b. 1945) |
|