A queen regnant (plural: queens regnant) is a female monarch, equivalent in rank and title to a king, who reigns in her own right over a realm known as a "kingdom"; as opposed to a queen consort, who is the wife of a reigning king; or a queen regent, who is the guardian of a child monarch and rules temporarily in the child's stead, be it de jure in sharing power or de facto in …

This is a list of Swedish kings, queens, regents and viceroys of the Kalmar Union ... Sweden has been ruled by queens regnant on three occasions: by Margaret (1389–1412), Christina (1632–1654) and Ulrika Eleonora (1718–1720) respectively, and earlier, briefly, by a female regent Duchess Ingeborg (1318–1319).