Josef Johann Mann (19 May 1804 – 20 March 1889), or Johann Josef Ritter von Mann, was a German Bohemian entomologist and a specialist in Lepidoptera.

Mann was born in Jablonné v Podještědí, Bohemia (present-day Czech Republic).

He was a painter, expedition collector and preparator at the Hofkabinet in Vienna, Austria.

Mann worked with the curator Alois Friedrich Rogenhofer.

Media related to Josef Johann Mann at Wikimedia Commons