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Last name Zachar (Захар , Zachar ) , all around the world, is quite a common cognomen. The last name Zachar is habitual in Eastern Europe, particularly Slovakia, where it is quite a common surname, Hungary, where it is quite a rare surname, and Czechia. Not in comparison with a country's population, this name is the most popular in Eastern Europe, particularly Slovakia, Hungary, and Russia. More prevalently, Zachar is the forename as well as the last name.