Johann Georg von Hahn (11 July 1811 – 23 September 1869) was a German diplomat, philologist and specialist in Albanian history, language and culture, who spent the majority of his career working within the bounds of the Austrian Empire.
In 1847, he was named Austrian consul in Ioannina, which was then part of the Ottoman Empire, today in Greece.
He was transferred to the Hellenic Kingdom on the island of Syros in 1851, and until 1869 was the consul-general in Athens.
He assembled and published source materials on Albanian language and culture as descendants of ancient Illyrians.
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