John Leonard
# John Leonard

John or Jack Leonard may refer to:

* John Leonard (songwriter), early 19th century radical poet and songwriter, probably born in Gateshead
* John Leonard (critic) (1939–2008), American literary, television, film, and cultural critic
* John Leonard (poet) (born 1965), Australian poet
* John Leonard (Gaelic footballer) (born 1976), Gaelic footballer
* John Leonard (canoeist) (born 1948), New Zealand sprint canoeist
* John Leonard (judge) (1926–2002), British judge
* Johnny Leonard (1903–1995), Australian rules footballer
* John B. Leonard (1864–1945), American civil engineer
* John J. Leonard, American roboticist and professor at MIT
* Jack Leonard (footballer) (1876–?), English footballer
* Jack Leonard (hurler) (1873–1938), Irish hurler
* Jack E. Leonard (1910–1973), American comedian and actor
* John E. Leonard (1845–1878), United States Representative from Louisiana
* J. William Leonard, director of the Information Security Oversight Office
* John Leonardi (1541–1609), Catholic saint whose feast day is on 9 October
* John Leonard (bishop) (1829–1908), Irish bishop
* John W. Leonard (1890–1974), US Army general
* John Leonard, Baron Leonard (1909–1983), British Labour Party politician
* John Leonard (ice hockey), (born 1998), American ice hockey player
* John Leonard (architect), English architect
