Josef Herzig (25 September 1853 – 4 July 1924) was an Austrian chemist.

Herzig was born in Sanok, Galicia, which at that time was part of Austria-Hungary.

Herzig went to school in Breslau until 1874, started studying chemistry at the University of Vienna but joined August Wilhelm von Hofmann at the University of Berlin in the second semester.

He succeeded in determining the structure of flavonoids quercetin, fisetin and rhamnetin as well as several alkaloids.

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