St Andrew St John may refer to:
St Andrew St John, 14th Baron St John of Bletso (1759–1817), English politician St Andrew St John, 15th Baron St John of Bletso (1811–1874), English peer St Andrew St John, 16th Baron St John of Bletso (1840–1887), English peer St Andrew St John (priest) (1732–1795), Dean of Worcester
See also Andrew St. John