Birgitte Possing (born 1952) is a Danish historian who has specialized in historical biography. In 1992, paying special attention to aspects relating to gender, she earned a doctorate with Viljens styrke, a biography of the pioneering feminist and educator Natalie Zahle. Possing has headed the manuscript department of the Danish National Library and coordinated research at the National Museum of Denmark. From 2000 to 2004, she was director of Danmarks Humanistiske Forskningscenter (Danish Institute for Advanced Studies in the Humanities) after which she was appointed senior researcher at the Danish National Archives. In the late 1990s, while collaborating with Kvinfo on Dansk kvindebiografisk leksikon covering women's biographies, Possing identified 1,140 Danish women of historical importance who had not been included in the authoritative biographical dictionary Dansk Biografisk Leksikon.[1][2][3]