Family name Дорр (Dorr 
, Doerr , Дорр 
) , worldwide, is a common last name. The cognomen Дорр is habitual in Germany, where it is quite a rare surname, Austria, and the United States. Measured by absolute frequency, it most frequently occurs in the United States, Germany, and Brazil. Very seldom, Дорр is the forename as well as the last name.