Princess Mary

Princess Mary may refer to:

* Mary Tudor, Queen of France
* Mary, Princess Royal and Princess of Orange (1631-1660), daughter of Charles I of England
* Princess Mary of Great Britain (1723-1772), daughter of George II of Great Britain
* Princess Mary, Duchess of Gloucester and Edinburgh (1776-1857), daughter of George III of the United Kingdom
* Princess Mary Adelaide of Cambridge (1833-1897), granddaughter of George III of the United Kingdom
* Mary, Princess Royal and Countess of Harewood (1897-1965), daughter of George V of the United Kingdom
** "Princess Mary's Gift Book" - World War I relief book, illustrated by Edmund Dulac, referring to the above
* Mary, Crown Princess of Denmark (born 1972), Australian-born wife of Frederik, Crown Prince of Denmark
* Before her accession, Queen Mary I of England (1516-1558) was also known as "Princess Mary" and is mentioned as such, for example, in Mark Twain's "The Prince and the Pauper".
*HMS "Princess Mary", ships of the Royal Navy