Percy Bysshe Shelley (4 August 1792 – 8 July 1822) was one of the major English Romantic poets and is critically regarded as among the finest lyric poets in the English language. Shelley was famous for his association with John Keats and Lord Byron. The novelist Mary Shelley (née Godwin) was his second wife.

Shelley's unconventional life and uncompromising idealism, combined with his strong disapproving voice, made him a marginalized figure during his life, important in a fairly small circle of admirers, and opened him to criticism as well as praise afterward.