Cognomen Rihert (Рихерт 
, Rihert 
) , in all the world, is a rare family name. The surname Rihert is habitual in Kazakhstan, where it is a rare surname, Bulgaria, and Kyrgyzstan. In absolute terms, it is the most numerous in Kazakhstan, Russia, and Bulgaria. Much less frequently, Rihert is the forename as well as the last name.