Gustav Leberecht Flügel (February 18, 1802 – July 5, 1870) was a German orientalist.
After attending high school in his native city Flügel studied theology and philosophy in Leipzig.
From 1851 he worked at the Fürstenbibliothek in Vienna on the cataloguing of Arabic, Turkish and Persian manuscripts.
Flügel 's main work was the creation of a bibliographic and encyclopaedic lexicon of Haji Khalfa, with Latin translation (London and Leipzig, 1835-1858).
Particular importance was attached to his edition of the Qur’ān, printed in Leipzig (1834 and 1893) by the printer and publisher Carl Christoph Traugott Tauchnitz.