Boadicea Haranguing the Britons is a 1793 history painting by the British artist John Opie.

It depicts the Boudica the queen of the Ancient British Iceni tribe who led an ultimately unsuccessful uprising against the Roman Empire during the first century.

She is portrayed in a white robe and red cloak, a bright figure in a dark composition.

[1] Her poised aristocratic manner contrasts to the depiction of her as a battlefield warrior in Henry Courtney Selous's 1840 painting of the same title.

[2] An engraving based on Opie's painting produced by William Sharp is now in the National Portrait Gallery.