John Howard (born 1939) was Prime Minister of Australia from 1996 to 2007.
John Howard may also refer to:
- John Howard (author) (born 1961), English author
- John Howard (prison reformer) (1726–1790), English prison reformer of the 18th century
- John Howard (UK businessman), British businessman
- John Howard, a minor character in Marvel Comics
- John C. Howard (1930–1983), American film editor
- John D. Howard, American businessman and private equity investor, head of Irving Place Capital
- John Curtois Howard, Chief Justice of Ceylon, 1939–1945
- John Langley Howard (1902–1999), American artist, muralist, printmaker and illustrator
- John P. Howard III, American lawyer and judge