"Mary Hamilton" is a song.

Mary Hamilton may also refer to:

• Mary Hamilton, also known as Charles Hamilton (female husband) (born c. 1721–1724), woman who married while living as a man
• Mary Hamilton (lady in waiting) (died 1719), lady in waiting
• Lady Mary Hamilton (1736–1821), Scottish novelist
• Mary Hamilton (politician) (1882–1966), Scottish politician
• Mary Hamilton (equestrian), equestrian from New Zealand
• Mary Hamilton, Duchess of Abercorn (1848–1929), English aristocrat
• Mary Lou Graham Hamilton, baseball player
• Mary Hamilton (equestrian), New Zealand equestrian
• Mary Riter Hamilton (1873–1954), Canadian World War I painter
• Mary Barbara Hamilton, the birth name of Barbara Cartland, author
• Mary Hamilton (activist) (1935–2002), American activist in the Civil Rights Movement
• Mary Hamilton (Arrowverse), a fictional character in the Arrowverse franchise

• All pages with titles containing Mary Hamilton
• Mary Hamilton Frye (1890–1951), American stained glass artist and children's book illustrator
• Mary Victoria Douglas-Hamilton (1850–1922), Hereditary Princess of Monaco