Hantzsch

• Arthur Rudolf Hantzsch, German chemist
• * Hantzsch–Widman nomenclature, type of systematic chemical nomenclature for naming heterocyclic parent hydrides
• * Hantzsch pyridine synthesis, multi-component organic reaction between an aldehyde a β-keto ester and a nitrogen donor
• * Hantzsch pyrrole synthesis, the chemical reaction of β-ketoesters with ammonia and α-haloketones to give substituted pyrroles
• Bernhard Hantzsch, German ornithologist, Arctic researcher and writer, who discovered two Icelandic bird subspecies
• * Hantzsch Island, uninhabited island in the Qikiqtaaluk Region of Nunavut, Canada named after Bernhard Hantzsch