Family name Коштаева (Коштаева 
, Koshtaeva) , around the globe, is a rare cognomen. The surname Коштаева is habitual in Kazakhstan, where it is quite a rare surname, Kyrgyzstan, where it is a very rare surname, and Russia, where it is an extremely rare surname. Much less frequently, Коштаева is the forename as well as the last name.