Marie Melanie d'Hervilly Gohier Hahnemann (2 February 1800 – May 1878), was a French physician in homeopathy, married in 1835 to Samuel Hahnemann. She was the first female doctor in homeopathy.
She was a member of a noble family, but because of domestic violence she lived in the family of her art teacher Guillaume Guillon-Lethiere in Paris from 1815. During the cholera epidemic of Paris in 1832, she became interested in hompeopathy. In 1834, she visited Samuel Hahnemann, and the year after they married and moved to Paris, where they opened a clinic. She was his student and assistant and soon an independent homeopathist. She was given a diploma from The Allentown Academy of The Homeopathic Healing Art in USA.
At the death of Samuel Hahnemann, she was entrusted with his clinic and the manuscript of his latest work, Organon. She continued with the practise, but in 1847, she was trialed and judged guilty of illegal practice. She continued to practice and was granted a medical license in 1872. She was a controversial person, being a woman physician and a woman homeopath.
She was buried in the Père Lachaise Cemetery.