John Good

John or Jack Good may refer to:
 * I. J. Good (1916–2009), known as Jack, British statistician and cryptanalyst
 * Jack Good (producer) (1931–2017), British television, theatre and music producer
 * John Good (actor) (1919–1996), American actor in The Private Affairs of Bel Ami
 * John Good (footballer) (1933–2005), English footballer
 * John Good (Irish politician) (died 1941), Irish politician and company director
 * John F. Good (1936–2016), FBI agent who created the Abscam sting operation
 * John G. Good (born 1926), Pennsylvania politician
 * John Jay Good (1827–1882), mayor of Dallas
 * John Mason Good (1764–1827), English writer on medical, religious and classical subjects