Etta Lubina Johanna Palm d'Aelders (April 1743 – 28 March 1799), also known as the Baroness of Aelders, was a Dutch spy and feminist, outspoken during the French Revolution. She gave the address Discourse on the Injustice of the Laws in Favour of Men, at the Expense of Women to the French National Convention on 30 December 1790 and was a founding member of the first female-only organisation in the history of France, Société patriotique et de bienfaisance des Amies de la Vérité. D'Aelders used these political platforms to instruct French citizens on the struggles of women in the public and private spheres, and to show men the harm that was being caused to the lives of women through their relative social inferiority. D'Aelders joined women like Olympe de Gouges and Théroigne de Méricourt in her resolute determination to improve the rights of women and mobilise tangible action to drive female equality forward.