Josef Dessauer (28 May 1798 in Prague – 8 July 1876 in Mödling, near Vienna), was an Austrian-born composer who wrote many popular songs, and also some less successful operas.
Dessauer was born into a wealthy Jewish family, and studied piano in Prague with Bedřich Diviš Weber and composition with Wenzel Tomaschek. Dessauer began as a song composer, but later began composing operas, of which very few were performed.
In 1821 he settled in Vienna, from which he made many European tours. He was a friend of many composers of his time, such as Gioachino Rossini, Franz Schubert, Hector Berlioz, Felix Mendelssohn, Franz Liszt and Frédéric Chopin, who dedicated some pieces to him.