Mary, Princess Royal and Countess of Harewood (Victoria Alexandra Alice Mary; 25 April 1897 – 28 March 1965) was a member of the British Royal Family; she was the third child and only daughter of King George V and Queen Mary.

Princess Mary was born at York Cottage on the Sandringham Estate in Norfolk, England. Her parents were the then Duke and Duchess of York. Her father was the eldest surviving son of the then Prince and Princess of Wales.

She was named after her paternal great-grandmother Queen Victoria (who would have preferred that she be christened 'Diamond' rather than Victoria, because she was born during the Queen's Diamond Jubilee year); her paternal grandmother, Alexandra, Princess of Wales; and her maternal grandmother, Princess Mary of Teck. Since she had the same birthday as her deceased great-aunt Alice, Grand Duchess of Hesse and by Rhine, the name Alice was added in. She was always known by the last of her Christian names, Mary. She was fifth in the line of succession at the time of her birth.

Her baptism took place at St Mary Magdalene's Church near Sandringham on 7 June 1897 by William Dalrymple Maclagan, Archbishop of York. Her godparents were: The Queen (her great-grandmother); the King of the Hellenes (her great-uncle); the Dowager Empress of Russia (her paternal great-aunt); the Prince and Princess of Wales (her paternal grandparents); the Duchess of Teck (her maternal grandmother); Princess Victoria of Wales (her paternal aunt); and Prince Francis of Teck (her maternal uncle).

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