James I'Anson Cudworth (12 January 1817 – 22 October 1899) was an English railway engineer, and was Locomotive Superintendent of the South Eastern Railway (SER). He served in this capacity from 1845 to 1876. He is notable for designing a successful method for burning coal in steam locomotives without significant emission of smoke, and for introducing the 0-4-4T wheel arrangement to English railways.