Joseph Neil Jackson (born 6 March 1946) is a British former international swimmer who competed at the 1968 Summer Olympics.
Jackson represented the England team and won a silver medal in the 440 yards medley and a bronze medal in the 220 yards backstroke, at the 1966 British Empire and Commonwealth Games in Kingston, Jamaica.
At the 1968 Olympic Games in Mexico, Jackson competed in three events; the 100 metres backstroke, the 100 metres butterfly and the medley relay.