Helen Maria Williams (17 June 1759 – 15 December 1827) was a British novelist, poet, and translator of French-language works. A religious dissenter, she was a supporter of abolitionism and of the ideals of the French Revolution; she was imprisoned in Paris during the Reign of Terror, but nonetheless spent much of the rest of her life in France.
A controversial figure in her own time, the young Williams was favourably portrayed in a 1787 poem by William Wordsworth, but (especially at the height of the French Revolution) she was portrayed by other writers as irresponsibly politically radical and even as sexually wanton.
She was born on 17 June 1759 in London to a Scottish mother, Helen Hay, and a Welsh army officer father, Charles Williams. Her father died when she was eight; the remnant of the family moved to Berwick-upon-Tweed, where she had what she herself would describe in the preface to a 1786 book of poems as "a confined education". In 1781 she moved to London and met Andrew Kippis, who would have great influence on her literary career and political views and brought her into contact with the leading London intellectuals of her time.
Her 1786 Poems touch on topics ranging from religion to a critique of Spanish colonial practices. She allied herself with the cult of feminine sensibility, deploying it politically in opposition to war ("Ode on the Peace", a 1786 poem about Peru) and slavery (the abolitionist "Poem on the Bill Lately Passed for Regulating the Slave Trade", 1788).
In the context of the Revolution Controversy, she came down on the side of the revolutionaries in her 1790 novel Julia and defied convention by travelling alone to revolutionary France, where she was hosted by Mme. Du Fossé, who had earlier, in London, given her lessons in French. Her letters from France marked a turn from being primarily a writer of poetry to one of prose. She enthusiastically attended the Fête de la Fédération on the anniversary of the storming of the Bastille and returning briefly to London in 1791 was a staunch, though not completely uncritical, defender of the Revolution. Returning to France in July 1791, she published a poem "A Farewell for two Years to England"; in fact she briefly visited England again in 1792, but only to persuade her mother and her sisters, Cecilia and Persis, to join her in France just as the country was moving toward the more violent phases of its revolution.