Nina Henriette Wendeline Bang née Ellinger (6 October 1866 – 25 March 1928) was a Danish social democratic politician and historian.

She grew up in a right-wing middle-class family, but unlike her brother the politician and physicist Heinrich Oscar Günther Ellinger, who became a member of the Landsting for the conservative party Højre,[1] she became a marxist while studying history at the University of Copenhagen in the 1890s.

Bang saw the records of the ships that passed through Oresund and the type and value of their cargo throughout centuries as unique historical documents to the economic history of England, the Netherlands, the Hanseatic League and the Baltic states.

[3][4] Analyzing the large amount of documents was a huge project, and she published the first two volumes of Tabeller over Skibsfart og Varetransport gennem Øresund (English: Tables of Shipping and Transport of Goods through the Sound) in 1906 and 1922.

When a group of students sang the anthem anyway, addressing it directly to King Christian X of Denmark, she refused to stand up as tradition dictated and as the entire audience did.