Antoinette Cauvin, known as Madame Sorgue (1864–1924), was a French anarcho-syndicalist orator and journalist.

[3] Sorgue was born in 1864 to the Fourierist doctor and philosopher Joseph-Pierre Durand de Gros.

Sorgue was known as the 'most dangerous woman in Europe' due to her role in spreading the ideas and methods of French syndicalism throughout Britain.

In relation to the feminism of the time, Sorgue sided with the anti-parliamentarians and anarchists on the issue of women's suffrage and was a strong critic of marriage and the family.

She died of a heart attack in London on 8 February 1924 in Bonnington Hotel, Southampton Row.