Family name Giah (Giah 
) , all around the world, is a rare cognomen. The last name Giah is habitual in Liberia, where it is quite a rare surname, Malaysia, where it is a rare surname, and Vietnam, where it is a very rare surname. Also, Giah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giah | Philippines, Vietnam, Malaysia, Indonesia, Liberia |