Johann Friedrich Rochlitz (12 February 1769 - 16 December 1842) was a German playwright, musicologist and art and music critic. His most notable work is his autobiographical account Tage der Gefahr (Days of Danger) about the Battle of Leipzig in 1813 — in Kunst und Altertum, Goethe called it "one of the most wondrous productions ever to have been written". A Friedrich-Rochlitz-Preis for art criticism is named after him — it is awarded by the Leipzig Gesellschaft für Kunst und Kritik and was presented for the fourth time in 2009.
Friedrich Rochlitz was born in Leipzig, where he attended the Thomasschule, and where, from 1789 to 1791, he studied theology, before working as a private tutor. In 1798 he founded the Allgemeine musikalische Zeitung, along with Gottfried Christoph Härtel, serving as its editor until 1818. He planned to marry the harpist Therese Emilie Henriette Winkel and so Duke Karl August made him a privy councillor of the Duchy of Saxe-Weimar on 14 September 1800, but the marriage did not materialise. Instead, on 23 February 1810 he married his childhood sweetheart Henriette Winkler née Hansen (1770–1834) on 23 February 1810. Her previous husband had been the Leipzig businessman Daniel Winkler and brought Winkler's precious art collection (including a Rembrandt painting) with her on her marriage to Rochlitz.
Rochlitz was a friend of several cultural figures of his era, including Johann Wolfgang von Goethe, Friedrich Schiller, E. T. A. Hoffmann and the composers Louis Spohr and Carl Maria von Weber — Weber dedicated his Piano Sonata No 4 in E minor (J287, Op 70) to Rochlitz. During a stay in Vienna, Rochlitz also got to know Beethoven and Franz Schubert, with the latter setting three poems by Rochlitz to music in 1827. Rochlitz died in Leipzig, aged 73.
Rochlitz, Johann Friedrich. In: Allgemeine Deutsche Biographie (ADB). Volume 30, Duncker & Humblot, Leipzig 1890, S. 85–91.