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Christina (Swedish: Kristina; 18 December 1626 – 19 April 1689) was a member of the House of Vasa and the Queen of Sweden in her own right from 1632 until her abdication in 1654. Her conversion to Catholicism and refusal to marry led her to relinquish her throne and move to Rome.

The Swedish queen is remembered as one of the most erudite women of the 17th century, wanting Stockholm to become the "Athens of the North" and was given the special right to establish a university at will by the Peace of Westphalia. She is also remembered for her unconventional lifestyle and occasional adoption of masculine attire, which have been depicted frequently in media; gender and cultural identity are pivotal themes in many of her biographies.

She succeeded her father Gustavus Adolphus upon his death at the Battle of Lützen at seven years old, but she began ruling the Swedish Empire when she reached the age of eighteen. During the Torstenson War in 1644, she initiated the issuance of copper in lumps to be used as currency. Her lavish spending habits pushed the state towards bankruptcy, sparking public unrest. Christina argued for peace to end the Thirty Years' War and received indemnity. Following scandals over her not marrying and converting to Catholicism, she relinquished the throne to her cousin Charles X Gustav and settled in Rome.

Pope Alexander VII described Christina as "a queen without a realm, a Christian without faith, and a woman without shame." She played a leading part in the theatrical and musical communities and protected many Baroque artists, composers, and musicians. Christina, who was the guest of five consecutive popes and a symbol of the Counter-Reformation, is one of the few women buried in the Vatican Grottoes.