Georg Klindworth, born Johann Georg Heinrich Klindworth on 16 April 1798 in Göttingen, Germany, was a nineteenth-century German diplomat and intelligence agent employed by several European leaders and princes.
He was a political exile from the 1848 upheavals, who had worked as a theater agent for two years, later as a lawyer and also as a statesman.
He was for many times described as one of the most influential secret diplomats of his time, from the Congress of Vienna to the time of Bismarck.Klindworth's "illegitimate" daughter Agnes Street-Klindworth (1825–1906) was a lover of the musician Franz Liszt with whom she had a vast letter correspondence.
In political literature, Georg Klindworth is characterized as "an important political secret agent of international reputation" and also as "a man of extraordinary ability, enterprise, amorality and ubiquity".
Georg Klindworth died in a suburb of Paris in January 1882.