Sir John Arnott, 1st Baronet (1814–1898), was an Irish entrepreneur.
John Arnott may also refer to: John Arnott (English footballer) (1932–2017), English footballer John Arnott (Scottish footballer), Scottish footballer John Arnott (politician) (1871–1942), Scottish politician Sir John Arnott, 2nd Baronet (1853–1940) of the Arnott baronets Sir John Arnott, 5th Baronet (1927–1981) of the Arnott baronets
See also John Arnot (disambiguation) Arnott (disambiguation)