Alfred John Day Diver (6 July 1823 – 25 March 1876) was an English first-class cricketer whose career spanned the 1843 season to the 1866 season. Diver played mainly for Cambridge Town Club (aka Cambridgeshire) and also played for Middlesex and Nottinghamshire. Popularly known as "Ducky", Diver is best known as a reliable batsman for various All-England Eleven teams. Following the 1859 English cricket season, he was one of the 12-strong party of English players who toured North America. Led by George Parr, this was the first ever overseas cricket tour.