Marian Hastings (1747–1837), born Anna Maria Apollonia Chapuset and called Marian von Imhoff, Baroness von Imhoff during her first marriage, was the wife of Warren Hastings, the British governor-general of Bengal in 1772–1785.

A native of Nuremberg, she met Hastings on a ship bound for India in 1769 while still married to her first husband, Baron Christoph Carl Adam von Imhoff.

[1] In 1768 she came to England with her husband and two sons after Elizabeth Schwellenberg who was a mistress of the robes to Queen Charlotte arranged for their emigration.

[1] She and her husband were on board the Duke of Grafton at Dover in March 1769 en route for India.

The divorce took a long time and it was not until 1777 when news came from Germany that Hastings was finally able to marry her in August 1777 in Calcutta.

George Thompson, who was Warren Hastings secretary in Calcutta, advised his boss in 1784 that he and his wife should sit for a painting.

The German painter Johann Zoffany created a painting of them but it was not delivered in 1784[2] when she left India because of her health.