James Thomson (November 23, 1834—June 3, 1882), published under the pseudonym Bysshe Vanolis, was a Scottish Victorian-era poet famous primarily for the long poem The City of Dreadful Night (1874), an expression of bleak pessimism in a dehumanized, uncaring urban environment.

Thomson was born in Port Glasgow, Scotland, and, after his father suffered a stroke, raised in an orphanage. He received his education at the Caledonian Asylum and the Royal Military Academy and served in Ireland, where in 1851, at the age of 17, he made the acquaintance of the 18-year-old Charles Bradlaugh who was already notorious as a freethinker, having published his first atheist pamphlet a year earlier.

More than a decade later, Thomson left the military and moved to London, where he worked as a clerk. He remained in contact with Bradlaugh, who was by now issuing his own weekly National Reformer, a "publication for the working man". For the remaining 19 years of his life, starting in 1863, Thomson submitted stories, essays and poems to various publications, including the National Reformer, which published the sombre poem which remains his most famous work.