Princess Louise Margaret of Prussia (Louise Margaret Alexandra Victoria Agnes; later Duchess of Connaught and Strathearn; 25 July 1860 – 14 March 1917) was a German princess, and later a member of the British Royal Family, the wife of Prince Arthur, Duke of Connaught and Strathearn.
She also served as the Viceregal Consort of Canada, when her husband served as the Governor General of Canada from 1911 to 1916.
King Carl XVI Gustaf of Sweden and Queens Margrethe II of Denmark and Anne-Marie of Greece are among her great-grandchildren.