Family name Kaltaev (Калтаев 
, Kaltaev ) , in all the world, is quite a rare surname. The last name Kaltaev is habitual in Azerbaijan, where it is quite a rare surname, Kazakhstan, and Kyrgyzstan, where it is a rare surname. Not in comparison with a country's population, it is commonest in Kazakhstan, Azerbaijan, and Uzbekistan. Much less frequently, Kaltaev is the forename as well as the last name.