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 (1519–1557), daughter-in-law of King Henry VIII of England
• Mary Somerset, Duchess of Beaufort (gardener) (1630–1715), introduced a number of exotic plants to British gardens
• Mary Somerset, Duchess of Beaufort (sportswoman) (1897–1987), relative of the British royal family