Cognomen Sailov (Саилов 
, Sailov 
) , in the entire world, is a rare surname. The last name Sailov is habitual in Azerbaijan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Singapore, where it is a very rare surname. In absolute terms, this name is the most popular in Azerbaijan, Russia, and Indonesia. Very seldom, Sailov is the forename as well as the last name.