Surname Агайев (Agayev 
, Агайев 
, Agajev 
) , across the world, is a common cognomen. The last name Агайев is characteristic of Azerbaijan, where it is a common surname, Turkmenistan, where it is quite a rare surname, and Estonia. In absolute terms, this name is the most popular in Azerbaijan, Turkmenistan, and Israel. Much less frequently, Агайев is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Agayev | Israel, Azerbaijan, Turkey, United States, Turkmenistan |
| Агайев | Russia |
| Agajev | Azerbaijan, Estonia |
| Agaiev | Georgia |