John or Johnny Morris may refer to:
- John Morris, Baron Morris of Aberavon (1931–2023), British politician, former Attorney-General
- John Morris (Australian politician) (1936–2013), Australian senator
- John Morris (Conservative politician) (1894–1962), British MP for Salford North, 1931–1945
- John Morris, Baron Morris of Borth-y-Gest (1896–1979), British law lord
- John Morris (judge) (1902–1956), Australian jurist
- John Carnac Morris (1798–1858), English civil servant of the East India Company
- J. H. C. Morris (John Humphrey Carlile Morris, 1910–1984), academic lawyer
- John Henry Morris (1828–1912), administrator in British India
- John Morris (FBI) (born 1947), Federal Bureau of Investigation special agent
- John Morris (Hebraist) (1595–1648), Regius Professor of Hebrew at Oxford University (1626)
- John Morris (bishop) (1866–1946), American prelate of the Roman Catholic Church
- John Brande Morris (1812–1886), English Anglican theologian, later a Roman Catholic priest
- John Edward Morris (1889–1987), American Roman Catholic priest
- John Gottlieb Morris (1803–1895), American Lutheran minister and entomologist
- John Hughes Morris (1870–1953), English Presbyterian minister, editors and writer
- John Morris (Jesuit) (1826–1893), English Jesuit and historical writer
- John Moses Morris (1837–1873), American minister and author
- John D. Morris (1946–2023), Christian creationist
- John Albert Morris (1836–1895), American businessman
- John Morris (physician) (1759–1793), American physician
- Sir John Morris, 1st Baronet (1745–1819), Welsh industrialist
- John Morris (geologist) (1810–1886), geologist
- John McLean Morris (1911–1993), American gynecologist
- John Morris (historian) (1913–1977), English historian
- John Morris (anthropologist) (1895–1980), British mountaineer and journalist
- John Morris (pirate) (fl. 1663–1672), English buccaneer
- John Morris, a character in the video game series Castlevania
- John Morris and Sons Salford, manufacturers of all kinds of fire fighting equipment