Cognomen كياني (Kiani 
, Kayani , كياني 
) , in all the world, is a widespread surname. The last name كياني is characteristic of Iran, where it is quite a common surname, United Arab Emirates, and Bahrain (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Iran, Pakistan, and Saudi Arabia. Much less frequently, كياني is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kiyani, Kiani, Kayani | United Arab Emirates, Iran, Pakistan, Saudi Arabia, United Kingdom |
| كياني | Egypt, Iran, Yemen, Iraq, Saudi Arabia |