Across the world, הרצוג (Herzog 
, Hertzog 
, הרצוג 
) is a rare masculine given name. The first name הרצוג is habitual in the Democratic Republic of the Congo, where it is a rare boy's name, South Africa, and Switzerland. Not in comparison with a country's population, this name is the most popular in the Democratic Republic of the Congo, South Africa, and China. Much more frequently, הרצוג is the last name as well as the forename.
הרצוג is also a name for the fictitious and mythical characters: Herzog Alba , the operatic character in the opera Der Schmied von Gent; Herzog Robert , the operatic character in the opera Guntram; Herzog Guido von Urbino , the operatic character in the opera Eine Nacht in Venedig; Herzog Blaubart , the operatic character in the opera Herzog Blaubarts Burg, Bluebeard's Castle and Herzog Manfred , the operatic character in the opera Ghismonda, among other works.