John Ruskin lived and worked for most of his life in London. While he is primarily remembered for the importance of his theoretical contributions to nineteenth-century urban literary studies in The Stones of Venice, his reading of Venice must be understood as related to his treatment of London. This entry contextualizes Ruskin’s life in the British capital city, before following his response to London from his initial Romanticism through to his later works, which constitute a virulent attack on the social ills of the modern metropolis. The entry concludes by considering the wider significance of Ruskin’s London within the context of modernist urban literary studies.