Mary Villiers, Duchess of Buckingham (30 July 1638 – 20 October 1704), formerly Mary Fairfax, was the wife of George Villiers, 2nd Duke of Buckingham. Mary was the daughter of Thomas Fairfax, 3rd Lord Fairfax of Cameron, and his wife Anne. She was baptised at St Mary Bishophill Junior, York, on 1 August 1638. During the 1650s, she was tutored by Andrew Marvell. The duke died in 1687. On her death, the dowager duchess was buried with her husband in the Buckingham vault at Westminster Abbey.