Georg August von Griesinger (8 January 1769 – 9 April 1845) was a tutor and diplomat resident in Vienna during the late 18th and 19th centuries. He is remembered for his friendships with the composers Joseph Haydn and Ludwig van Beethoven, and for the biography he wrote of Haydn.
He was born in Stuttgart on 8 January 1769. His father was Georg Christoph Griesinger (1734/5 - 1782), who was a lawyer and civil servant. He grew up in Stuttgart and attended university, studying theology, in Tübingen. He later worked as a tutor in an aristocratic home in Morges, Switzerland. In 1799, he moved to Vienna, in order to work as the tutor of the son of Count Johann Hilmar Adolph Schönfeld, the ambassador of Saxony to Austria. He remained in Vienna for the rest of his life, but changed careers there in 1804, becoming a diplomat at the Saxon embassy. He first held the rank of secretary, then counsellor and finally (1831) chargé d'affaires.
In Saxony Griesinger had become acquainted with Gottfried Härtel, head of the Leipzig publishing firm of Breitkopf & Härtel. When he moved to Vienna, the firm asked him to help negotiate a publishing agreement with Joseph Haydn. These negotiations were fully successful, and resulted in Breitkopf & Härtel producing a "complete works" edition of Haydn's compositions. Griesinger became Haydn's friend, and often visited him after his efforts were no longer needed for business reasons.
Griesinger eventually conceived the idea of writing a biography of Haydn, and when he came home from his visits to the composer, he wrote down the words he remembered, in hopes of increasing the accuracy of his work. The book appeared first as a sequence of eight installments in the Breitkopf & Härtel journal Allgemeine musikalische Zeitung, then, after revisions, as an independent work in 1810 (Biographische Notizen über Joseph Haydn, Leipzig).
Particularly in comparison to work of other Haydn biographers of the same time (e.g. Giuseppe Carpani and Albert Christoph Dies), Griesinger's stands out for its careful writing, thoughtfulness, care with facts, and reluctance to embellish. Haydn scholar Vernon Gotwals considered it a clear first choice among the early biographies for obtaining facts about Haydn's life.