Family name Lopatiev (Лопатьев 
, Lopatiev 
, Лопатиев 
) , throughout the world, is a very rare cognomen. The last name Lopatiev is habitual in Kazakhstan, where it is a very rare surname, Kyrgyzstan, and Ukraine. Measured by absolute frequency, this name is the most popular in Russia, Ukraine, and Kazakhstan. Very seldom, Lopatiev is the forename as well as the last name.