May Sinclair (Mary Amelia St Clair, 1863–1946) was a popular British novelist, essayist, literary critic and poet. She was an active suffragist, and wrote pamphlets for the Woman Writers’ Suffrage League, as well as extensive literary criticism (most notably her 1918 review of Dorothy Richardson’s Pilgrimage, in which she coined the literary term ‘stream of consciousness’) and poetry, and she was a well-read author of some twenty-three novels. She is perhaps best known today for The Life and Death of Harriett Frean (1922), as well as her supernatural fiction, collected in Uncanny Stories (1923) and The Intercessor and Other Stories (1931).