Mary, Princess Royal may refer to:
- Mary, Princess Royal and Princess of Orange (1631–1660), eldest daughter of King Charles I; wife of William II, Prince of Orange (1626–1650)
- Mary, Princess Royal and Countess of Harewood (1897–1965), only daughter of King George V; wife of Henry Lascelles, 6th Earl of Harewood (1882–1947)
This disambiguation page lists articles associated with the title Mary, Princess Royal.
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