Ingeborg of Norway, was a Norwegian princess and by marriage a Swedish royal duchess with a position in the regency governments in Norway (1319–27) and Sweden (1319–26) during the minority of her son, King Magnus of Norway and Sweden. In 1318–1319, she was Sweden's de facto ruler, and from 1319 until 1326, she was Sweden's first de jure female regent. Her role in northern European history is considered of major importance.

Magnus IV was King of Sweden from 1319 to 1364, King of Norway as Magnus VII from 1319 to 1355, and ruler of Scania from 1332 to 1360. By adversaries he has been called Magnus Smek.