May Picqueray, whose real name is Marie-Jeanne Picqueray, is a French anarchist, anarcho-syndicalist, pacifist and antimilitarist activist of the 20th century. Born July 8, 1898 in Savenay, a singular figure in the libertarian movement, she lived through most of the major political and social struggles of her time.

Deeply pacifist, she mobilized in defense of the anarchists Nicola Sacco and Bartolomeo Vanzetti, going so far as to send a parcel bomb to the United States embassy to force the press to talk about their cause, without causing any victims. Hostile to all dictatorships, she fought against fascism, Stalinism, the Spanish Civil War and the Second World War, participating in helping refugees, Spanish children and networks of false papers and escapes from French camps. A feminist before her time, May Picqueray claims an independent life, refusing traditional family models. She raises her three children alone, born to three different partners, while tirelessly pursuing her activist and professional activity.

A press proofreader, she became a figure in the proofreaders' union and worked for several newspapers, including Le Canard Enchaîné, while remaining active in anti-militarist and anti-nuclear struggles and in support of conscientious objectors. From 1974 to her death, she ran the libertarian newspaper Le Réfractaire, organ of the Friends of Louis Lecoin, thus continuing the fight for peace and individual freedoms until her death in Paris on November 3, 1983.