Cognomen Гесснер (Gessner 
, Bührer 
, Гесснер 
) , all over the world, is a common family name. The cognomen Гесснер is habitual in Germany, where it is quite a rare surname, Switzerland, and Moldova. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and Brazil. Very seldom, Гесснер is the forename as well as the last name.