John Grant may refer to:
- John Grant (screenwriter) (1891–1955), screenwriter, wrote for Abbott and Costello
- Johannes Grant, engineer, believed by some scholars to have been Scottish, who fought in the Siege of Constantinople
- John Gaston Grant (1858–1923), U.S. Representative from North Carolina
- John Grant (American football) (born 1950), American football player
- John Grant (British diplomat), British diplomat and current head of the UK's Mission to the European Union
- John Grant (British politician) (1932–2000), British Labour and SDP Member of Parliament
- John Grant (English footballer) (born 1981), English football (soccer) player
- John Grant (Scottish footballer) (born 1931), Scottish football (soccer) player
- John Grant (Gunpowder Plot) (c. 1570–1606), one of the conspirators in the Gunpowder Plot
- John Grant (novelist) (born 1933), British author who writes under the pen name Jonathan Gash and is best known for the Lovejoy series
- John Grant (author) (born 1949), pseudonym used by science fiction writer Paul Le Page Barnett
- John Grant (children's author) (born 1930), Scottish writer and illustrator, known for the Littlenose series
- John Grant (neurosurgeon) (born 1922), President Organising Committee for the Sydney Paralympic Games
- John Grant (Manchester politician), Manchester councillor for Whalley Range
- John Grant (Australian politician) (1857–1928), Australian Senator
- John Grant (rugby league) (born 1950), Australian rugby league footballer
- John Grant (priest) (fl. 1731–1744), Archdeacon of Barnstaple
- John Grant, Jr. (born 1974), Canadian MLL and NLL lacrosse player
- John T. Grant (1813–1887), American railroad builder
- John W. Grant, Atlanta merchant and banker in the late 19th century
- John Gildroy Grant (1889–1970), New Zealand soldier
- John Duncan Grant (1877–1967), British soldier
- Johnny Grant (radio personality) (1923–2008), American radio personality
- Jack Grant (born 1915), Australian rules footballer
- Jackie Grant (1907–1978), West Indian cricketer
- John Grant (musician), solo artist and former lead vocalist with The Czars
- John Grant, 13th Earl of Dysart (born 1946), Scottish peer, landowner and conservationist
- John Grant (Canadian politician) (born 1841), Scottish-born merchant and political figure in British Columbia
- John Grant (footballer born 1891), English footballer
- John Moreau Grant (1895–1986), Canadian naval officer
Famous quotes containing the words john and/or grant:
“This is my commandment, that ye love one another.”
—Bible: New Testament Jesus, in John 15:12.
“Or bid the soul of Orpheus sing
Such notes as, warbled to the string,
Drew iron tears down Plutos cheek,
And made Hell grant what love did seek;”
—John Milton (16081674)