Simon Quaglio (1795-1878) was a German stage designer of Italian extraction. He worked mainly in Munich, and was among the first designers to use built scenery instead of painted flats. He designed over 100 productions during his career. Simon was part of the Quaglio family originally from the town of Laino, between Lake Como and Lake Lugano. Simon's father, Giuseppe Quaglio (1747-1828), practiced scene painting in Mannheim, Frankfurt, and Ludwigsburg. Simon's brother, Angelo Quaglio (1778-1810), was an architect and painter. He designed and painted landscapes and architectural pictures for Boisserée's work on Cologne Cathedral. Simon was also a lithographer.