John Jennings may refer to:

• John Jenyns (1660–1717), MP
• John Jennings (Burton MP) (1903–1990), British Conservative Party politician
• John Jennings (American politician) (1880–1956), U.S. Representative from Tennessee, 1939–1951
• John Jennings (Australian politician) (1878–1968), federal member for South Sydney and then Watson in the 1930s
• Jack Jennings (politician) (John Joseph Jennings, 1923–1995), member for the electoral district of Ross Smith, 1970–1977
• John Jennings (St Albans MP) (died 1642), English Member of Parliament

• John Jennings (musician) (1953–2015), American guitarist, multi-instrumentalist and producer
• John Jennings, bassist for British band The Ruts

• John Jennings (Royal Navy officer) (1664–1743), British admiral and politician
• John Jennings, British soldier who played a major part in the Battle of Carrickfergus

• John Edward Jennings (1906–1973), American historical novelist
• John T. Jennings, president of the Royal Society of South Australia, 2008–2010
• Sir John Jennings (businessman) (born 1937), British oil industry executive officer, Chancellor of Loughborough University, 2003–2010
• John Jennings (clergyman) (1814–1876), Canadian Presbyterian minister
• John Jennings (footballer) (1905–1997), English footballer for Cardiff City, Middlesbrough and Preston
• John Jennings (physician) (fl. 18th century), Irish doctor
• John Jennings (tutor) (1688–1723), English dissenting tutor
• John Jennings (priest) (1798–1883), Archdeacon of Westminster
• John Percival Jennings (1923–2003), horticultural adviser for the South Australian Department of Agriculture
• John Jennings (racing driver), participated in 1970 Greenville 200
• Midgley John Jennings (1806–1857), English missionary, founder of the SPG Mission to Delhi
• John C.T. Jennings, fictional hero of the Jennings books

• John Gennings (c. 1570–1660), biographer of his brother, Edward Gennings, 17th Century martyr
• Jonathan Jennings (1784–1834), governor and congressman

This disambiguation page lists articles about people with the same name.
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