Family name Istiani (Istiani 
) , all around the world, is quite a common surname. The last name Istiani is habitual in Indonesia, where it is quite a rare surname, Malaysia, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Very seldom, Istiani is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Istiani | United Kingdom, United States, Malaysia, Indonesia |