journalist John Francis Jackson (1908–1942), Australian fighter ace of World War II John Jackson (trade unionist) (1919–1995), British trade union leader John Jackson (businessman) (born 1929), author and campaigner John Jackson (law professor) (1932–2015), American law professor at Georgetown University John L. Jackson Jr. (born 1971), professor and dean of the University of Pennsylvania School of Social Policy and Practice John Jackson (hacker) (born 1994 or 1995), security researcher See also Jackson (name)