Name Heinrich Nepomuk | Role Botanist | |
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Institutions St. Mary's Hospital, ViennaUniversity of Vienna Influences Andre LevretNicolas PuzosGerard van Swieten Spouse Anna Susanne PetraschMagda Lena de Tremon Influenced by Andre Levret, Nicolas Puzos, Gerard van Swieten |
Heinrich Johann Nepomuk von Crantz (Roodt-sur-Eisch, Luxembourg, 25 November 1722 – 18 January 1799, Judenburg, Austria) was a botanist and a physician.

In 1750 he obtained his doctorate of medicine in Vienna, where he was a pupil of Gerard van Swieten (1700–1772). He studied obstetrics in Paris and London. In Paris he was influenced by André Levret (1703–1780) and Nicolas Puzos (1686–1753).
He was first married to Anna Susanne Petrasch and then to Magda Lena de Tremon. He had two sons and one daughter.
He became a lecturer in obstetrics at St. Mary's Hospital in Vienna in 1754. From 1756 to 1774, he taught physiology and materia medica at the university in that city.
He was the author of:
He recommended better methods of hygiene for midwives. In addition to his work in medicine, he studied chemistry, botany, and the sources of mineral water. The plant genus Crantzia (Gesneriaceae) was named for him by Thomas Nuttall.