Last name Hiadi (Хяди 
, Хиади , Hiadi 
) , in the world, is a very rare cognomen. The surname Hiadi is habitual in Morocco, where it is a rare surname, Russia, where it is an extremely rare surname, and Mexico. More frequently, Hiadi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Хяди | Russia, Kazakhstan |
| Хиади | Russia |
| Hiadi | Philippines, Mexico, United States, Nigeria, Morocco |