Josef Emanuel Fischer von Röslerstamm

Josef Emanuel Fischer von Röslerstamm or Josef Fischer von Röslerstamm or Josef Fischer von Rösslerstamm (19 February 1787, Rumburg – 17 March 1866, Vienna) was an Austrian entomologist who specialised in Lepidoptera.

He was an industrialist manufacturing macaroni, vermicelli, and other processed foods. He lived in Vienna from 1837. Röslerstamm developed a method system of systematic tables (1834–1842) for the Microlepidoptera and described many new species of these tiny moths. He studied often in the Naturhistorisches Museum with Alois Friedrich Rogenhofer and Josef Johann Mann.