Lady Maria Callcott (1786 - 1844), was an English writer.

She was a daughter of Admiral Dundas and widow of Captain Thomas Graham, RN (d. 1822). With her first husband she travelled in India, South Africa and South America, where she acted for some time as teacher of Donna Maria, who became queen of Portugal in 1826; and in the company of her second husband, Augustus Wall Callcott she spent much time in the south of Europe.

She published:

• accounts of her visits to India (1812)
• on the environs of Rome (1820)
• Memoirs of Poussin (1820)
• a History of France
• a History of Spain (1828)
• Essays toward a History of Painting (1836)
• Little Arthur's History of England (1836)
• Scripture Herbal (1842).