John Lloyd may refer to:

• John J. Lloyd (1922–2014), American art director and production designer
• John Lloyd (graphic designer) (born 1944), co-founder of design consultancy Lloyd Northover
• John Lloyd (journalist) (born 1946), Scottish-born writer, journalist and publicist
• John Lloyd (producer) (born 1951), British television producer and comedy writer
• John Bedford Lloyd (born 1956), American actor
• John Morgan Lloyd (1880–1960), Welsh musician and composer
• John Selwyn Lloyd (born 1931), Welsh-language author

• John Lloyd (Australian footballer) (1945–2022), Carlton Football Club and father of Matthew Lloyd
• John Lloyd (boxer), British Olympic boxer; see Boxing at the 1908 Summer Olympics – Featherweight
• John Lloyd (referee) (born 1948), Welsh former football referee
• John Lloyd (rugby union) (born 1943), former head coach to Wales national rugby union team
• John Lloyd (tennis) (born 1954), British tennis player
• John Emrys Lloyd (1905–1987), British Olympic fencer
• John Henry Lloyd (1884–1964), Negro leagues baseball player "Pop" Lloyd
• John Lloyd (cricketer) (1844–1910), Welsh cricketer and barrister
• Eddie Lloyd (John E. Lloyd, 1902–?), English professional footballer

• John Lloyd (Australian politician) (1818–1881), New South Wales politician
• John Lloyd (Australian public servant), former Australian Public Service Commissioner
• John Lloyd (brigadier) (1894–1965), Australian soldier and commander 16th Brigade
• John Lloyd (MP for Denbighshire) (c. 1560–1606), British Member of Parliament
• John Lloyd (Canadian politician) (1908–1985), member of Canadian House of Commons for Halifax electoral district
• John Lloyd (Cardiganshire) (c. 1717–1755), Welsh Member of Parliament for Ceredigion
• John Lloyd (civil servant) (born 1940), formerly Clerk to the National Assembly for Wales
• John Lloyd (judge) (died 1607), one of the founding fellows of Jesus College, Oxford and judge of the High Court of Admiralty
• John Lloyd (political reformer) (1833–1915), Welsh-born member of the London County Council
• John Lloyd (scholar) (1750–1815), Welsh scholar, Fellow of the Royal Society and Member of Parliament for Flintshire
• John Horatio Lloyd (1798–1884), British Member of Parliament for Stockport
• John W. Lloyd (1831–?), American Medal of Honor recipient
• John Yeeden Lloyd (1795–?), member of the New Zealand Legislative Council
• Sir John Lloyd, 1st Baronet (died 1664), British Member of Parliament for Carmarthenshire
• Selwyn Lloyd (John Selwyn Brooke Lloyd, 1904–1978), foreign secretary of the United Kingdom

• John Lloyd (rector of Caerwys) (1733–1793), Welsh cleric and antiquarian
• John Lloyd (bishop of St David's) (1638–1687), Vice-Chancellor of Oxford University, 1682–85
• John Lloyd (bishop of Swansea) (1847–1915), Welsh suffragan bishop
• John Lloyd (vicar of Cilcain) (1754–c. 1807), Welsh clergyman and academic
• Saint John Lloyd (died 1679), one of the Catholic Forty Martyrs of England and Wales
• John Lloyd (archdeacon of Montgomery) (1879–1951), Welsh clergyman
• J. P. D. Lloyd (John Plummer Derwent Lloyd, 1861–1933), Episcopal cleric in the United States and Canada

• John Augustus Lloyd (1800–1854), English engineer and surveyor
• John Edward Lloyd (1861–1947), Welsh historian
• John Hardress-Lloyd (1874–1952), soldier and polo player
• John M. Lloyd (died 1892), Washington, D.C. policeman
• John Uri Lloyd (1849–1936), American pharmacist
• J. William Lloyd (1857–1940), American individualist anarchist
• John Davies Knatchbull Lloyd, antiquarian researcher and public servant
• John Lloyd (archaeologist), British classical archaeologist

• Jon Lloyd (born 1956), chief executive of UK Coal
• Jon Lloyd (microbiologist), professor of geomicrobiology
• John Lloyd Cruz (born 1983), Filipino actor
• John Loyd (1875–1943), American college football player and physician
• Jonathan Lloyd (disambiguation)