Stephen Lewin (c. 1822 – 1913) was an English architect, artist, civil engineer and an iron-founder, who was a builder of steamboats and steam locomotives. Initially he worked in Boston in Lincolnshire as a civil engineer with his father William Lewin, who was an assistant to John Rennie the Elder. His should not be confused with his son, Stephen Samuel Lewin (c. 1848 – 1909), a successful artist who specialised in historical works often featuring cavaliers and figures in 17th-century costumes.