Arnott is a surname of Scottish origin. Notable people with the surname include:
Andy Arnott (born 1973), English former professional football (soccer) player
Archibald Arnott (1772–1855), British Army surgeon
Audrey Arnott (1901–1974), medical illustrator
Bob Arnott (born 1922), Australian Olympic skier
Bruce Arnott (1938-2018), South African sculptor and academic
Caroline Arnott (died 1933), Dame Commander of the Order of the British Empire
Drew Arnott, Canadian musician
Eric John Arnott (1929-2011), British ophthalmologist and surgeon
Geoffrey H. Arnott (1902–1986), Australian chairman of Arnott's Biscuits Holdings W. Geoffrey Arnott (1930–2010), British classicist George Arnott Walker-Arnott (1799-1868), U.K. botanist with the standard author abbreviation "Arn." Halse Rogers Arnott (1879–1961), Australian medical practitioner and chairman of Arnott's Biscuits Holdings Jake Arnott (born 1961), British novelist James Fullarton Arnott (1914–1982), Scottish theatre professor Janet Arnott (born 1956), Canadian curler Jason Arnott (born 1974), Canadian professional ice hockey center Joanne Arnott (born 1960), Canadian Métis writer John Arnott (1814–1898), Irish entrepreneur John Arnott (English footballer) (born 1932), English former professional football (soccer) player Jonathan Arnott (born 1981), British politician Kevin Arnott (cricketer) (born 1961), former Zimbabwean cricketer Kevin Arnott (footballer) (born 1898), English footballer Marion Arnott, Scottish author Melville Arnott (1909–1999), British academic Neil Arnott (1788–1874), Scottish physician Peter R. Arnott (born 1932), musician, composer, theatre director Ray Arnott (21st century), Australian rock drummer, singer and songwriter Robert Arnott (academic) (born 1951), British archaeologist Robert D. Arnott (born 1954), American entrepreneur, investor, editor, and writer Simon Arnott (born 1976), former Australian rules footballer Struther Arnott (1934–2013), Scottish molecular biologist and chemist Ted Arnott (born 1963), Progressive Conservative member of the Legislative Assembly of Ontario Walter Arnott (1863–1931), Scottish all-round sportsman William Arnott (politician) (1832–1907), American farmer and politician William Arnott (biscuit manufacturer) (1827–1901), Scottish founder of Arnott's Biscuits Holdings