Queen Sonja of Norway is the current reigning monarch of the Kingdom of Norway. She has held the title since her husband, King Harald V, ascended to the throne in 1991. Queen Sonja is a strong advocate for women's rights and has been a vocal supporter of the United Nations
From Wikipedia
Sonja is Queen of Norway as the wife of King Harald V. She is Norway's first queen consort since Queen Maud, the wife of King Haakon VII, who died in 1938.