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Surname Sayfullaev (Sayfullaev
, Сайфуллаев
, Саифуллаев
) , around the world, is a rare cognomen. The last name Sayfullaev is characteristic of Central Asia, particularly Kazakhstan, where it is quite a rare surname, Tajikistan, and Uzbekistan. In absolute terms, it is commonest in Uzbekistan, Kazakhstan, and Russia. Very seldom, Sayfullaev is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayfullaev | Kazakhstan, Uzbekistan, Russia, United States, United Kingdom |
| Сайфуллаев | Kazakhstan, Uzbekistan, Russia, Tajikistan, Kyrgyzstan |
| Саифуллаев | Kazakhstan, Russia |