Surname Рігерт (Riegert 
, Рігерт 
) , all around the world, is quite a rare last name. The surname Рігерт is characteristic of France, where it is quite a rare surname, Germany, where it is a rare surname, and Czechia. In absolute terms, it is commonest in France, Germany, and the United States. Much less frequently, Рігерт is the forename as well as the last name.