Marie de Villermont (1848–1925), countess of Hennequin, was a Belgian artist, writer and feminist.
She was not only a contributor but also co-editor of La Revue Mauve, an up-market magazine about social and cultural issues published in Brussels from 1897 to 1899.
A series of her essays on feminism was later published as the book Le Mouvement féministe: Ses causes, son avenir, solution chrétienne (1900).
In the early twentieth century, Villermont wrote a number of books, including biographies of Veronica Giuliani and Isabella Clara Eugenia.
In 1903 she founded the first union of farming women at Ermeton-sur-Biert, leading to the establishment of the Cercle de Fermières at Namur in 1909.