Mary Somerset
Mary Somerset may refer to:
- St Mary Somerset, a church in the City of London
- Lady Mary Somerset of Worcester, Baroness Grey de Wilton
- Mary FitzRoy, Duchess of Richmond and Somerset, daughter-in-law of King Henry VIII of England
- Mary Somerset, Duchess of Beaufort (gardener), introduced a number of exotic plants to British gardens
- Mary Somerset, Duchess of Beaufort (sportswoman), relative of the British royal family