Duchess of Montrose is the title given to the wife of the Duke of Montrose. It has been held by several women, including:
- Caroline Graham, Duchess of Montrose (1770-1847)
- Caroline Graham, Duchess of Montrose, also called Duchess of Montrose (Mr Manton) (1818–1894)
- Violet Graham, Duchess of Montrose (1854-1940)
- Catherine Graham, Duchess of Montrose (1935-2014)
Ships:
- PS Duchess of Montrose, launched 1902
- TS Duchess of Montrose, launched 1930