Queen Margaret of Denmark may refer to:
Margaret Fredkulla (1080s–1130), wife of king Niels of Denmark Margarethe of Bohemia (1186–1212), aka Queen Dagmar, first wife of Valdemar II of Denmark Margaret Sambiria (1230–1282) of Pomerelia, wife of king Christopher I of Denmark Margaret I of Denmark (1353–1412), wife of Haakon VI of Norway, daughter of Valdemar IV of Denmark, mother of Olaf II of Denmark, also ruled Scandinavia as de facto queen regnant Margrethe II of Denmark (b. 1940), head of state of Denmark 1972-2024