John Daly primarily refers to:

• John Daly (golfer) (born 1966), American professional golfer
• John Charles Daly (1914–1991), American radio and television newsman and host of the TV panel game show What's My Line?

John Daly may also refer to:

Entertainment

• John Daly (producer) (1937–2008), British movie producer and director of The Big Bang
• John Daly (Irish TV presenter), Northern Irish chat show host

Politics

• John Corry Wilson Daly (1796–1878), first mayor of Stratford, Ontario
• John Daly (Irish Member of Parliament) (1834–1888), Irish Nationalist Member of Parliament for Cork City
• John Daly (Fenian) (1845–1916), Irish revolutionary and member of the Irish Republican Brotherhood
• John Daly (Irish politician) (1867–1932), represented Cork in the 1920s
• John Daly (Australian politician) (1891–1942), Australian lawyer and politician
• J. Burrwood Daly (John Burrwood Daly, 1872–1939), U.S. Representative from Pennsylvania
• John B. Daly (New York politician) (1929–1999), New York politician

Sports

• John Daly (footballer, born 1870) (1870–1913), South Australian Hall of Fame footballer
• John Daly (runner) (1880–1969), Irish athlete who won an Olympic silver medal
• John Daly (footballer, born 1890) (1890–1968), Australian footballer for Melbourne
• John Daly (rugby) (1917–1988), Irish rugby union and rugby league footballer of the 1940s and 1950s
• John Daly (swimmer) (born 1956), Puerto Rican former swimmer
• John Daly (skeleton racer) (born 1985), American skeleton racer
• John Daly (soccer coach), English American college soccer coach
• John Fintan Daly, Irish Gaelic football coach and player
• John Daly (Gaelic footballer), Irish footballer for Galway

Other

• John Daly (gambler) (1838–1906), New York City criminal
• John Daly (outlaw) (1839–1864), American Western outlaw
• John Donald Daly (1841–1923), American businessman and landowner, for whom Daly City, California, is named
• John Daly (bishop) (1901–1985), colonial Anglican bishop
• John W. Daly (1933–2008), American biochemist
• John Daly (academic) (1936–2018), Australian academic, sports historian, and athletics coach
• John Lawrence Daly (1943–2004), self-declared "Greenhouse skeptic"
• John Daly (trade unionist) (1930–1999), British trade union leader
• John Daly (American media personality, born 1955), 1990s American journalist
• John Daly, gang member in the 1963 robbery of a Royal Mail train
• John Daly (cocktail), an alcoholic mixed drink, named after American golfer John Daly