Surname Kaydanov (Кайданов 
, Kaydanov 
) , in the world, is a rare last name. The last name Kaydanov is characteristic of Israel, where it is a rare surname, Belarus, where it is a very rare surname, and Ukraine. In absolute terms, it is the most numerous in Russia, Ukraine, and the United States. Very seldom, Kaydanov is the forename as well as the last name.