Cognomen Dikhtiar (Дихтяр 
, Дихтярь , Dikhtiar 
) , in all the world, is a rare last name. The last name Dikhtiar is characteristic of Eastern Europe, particularly Ukraine, where it is a rare surname, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Дихтяр, Дихтярь | Kazakhstan, Russia, Ukraine, Belarus |
| Dikhtiar | Ukraine, Georgia, United States |
| Дихтиар | Russia |