Marie Dähnhardt, born 1818 in Gadebusch, Mecklenburg-Western Pomerania, Germany, the daughter of an apothecary, was a German suffragette avant la lettre, for some time associated with the Berlin debating club Die Freien. She was married to the philosopher Max Stirner from 1843 to 1846. After divorcing she moved to London, and in 1852 to Australia. After returning to England she joined a Catholic commune, where she was found by Stirner's biographer John Henry Mackay, but refused to talk about her ex-husband. She died in 1902 in London.
Special issue "Meinem Liebchen Marie Dähnhardt" of the German journal Der Einzige. Vierteljahresschrift des Max-Stirner-Archivs Leipzig, nr. 33/34 (February/May 2006).