Carl Ludwig Giesecke FRSE[1] (6 April 1761 in Augsburg – 5 March 1833 in Dublin) was a German actor, librettist, polar explorer and mineralogist. In his youth he was called Johann Georg Metzler; in his later career in Ireland he was Sir Charles Lewis Giesecke. He is falsely accused of being the librettist of his friend Mozart’s The Magic Flute.