Harburg is a district (Landkreis) in Lower Saxony, Germany. It takes its name from the town of Harburg upon Elbe, which used to be the capital of the district but is now part of Hamburg. It is bounded by (from the east and clockwise) the districts of Lüneburg, Heidekreis, Rotenburg and Stade, by the City of Hamburg and the State of Schleswig-Holstein (District of Lauenburg).

In 1885 the Prussian government established three districts in this region: the District of Harburg, the District of Winsen and the district-free City of Harburg upon Elbe. In 1932 the districts of Winsen and Harburg were merged; the City of Harburg-Wilhelmsburg (which had been merged in 1927) became the capital of the district, although it remained district-free and hence was not a part of the district.

In 1937 the City of Harburg-Wilhelmsburg was incorporated into the City of Hamburg with the Greater Hamburg Act. Harburg and Wilhelmsburg became two boroughs of Hamburg. The District of Harburg remained with the State of Prussia and retained its autonomy. Winsen upon Luhe became the new capital of the District in 1944.

Edgar Yipsel Harburg (April 8, 1896 – March 5, 1981), known as E.Y. Harburg or Yip Harburg, was an American popular song lyricist who worked with many well-known composers. He wrote the lyrics to the standards, "Brother, Can You Spare a Dime?", "April in Paris", and "It's Only a Paper Moon", as well as all of the songs in The Wizard of Oz, including "Over the Rainbow".

Harburg, the youngest of four surviving children (out of ten), was born Isidore Hochberg on the Lower East Side of New York City on April 8, 1896. His parents, Lewis Hochberg and Mary Ricing, were faithful, Yiddish-speakingOrthodox Jews who had emigrated from Russia. Harburg's nickname "Yipsel" (often shortened to "Yip") came about as "Yipsel" is how people pronounced "YPSL" -- the acronym for the Young People's Socialist League of which he was a member. Some have incorrectly believed that "Yipsel" is a Yiddish word meaning "squirrel."

Later, he adopted the name Edgar Harburg. He was best known as Edgar "Yip" Harburg. He attended Townsend Harris High School, where he and Ira Gershwin, who met over a shared fondness for Gilbert and Sullivan, worked on the school paper and became life-long friends. They went on to attend City College (later part of the City University of New York) together.