Sophie of Mecklenburg-Güstrow, queen consort of Denmark and Norway (d. 1631)
Sophie of Mecklenburg-Güstrow (4 September 1557 – 14 October 1631) was Queen of Denmark and Norway by marriage to Frederick II of Denmark. She was the mother of King Christian IV of Denmark. She was Regent of Schleswig-Holstein from 1590 to 1594.