Acton is an English surname. Notable people with the surname include:
John Dalberg-Acton, 1st Baron Acton (1834–1902): Lord Acton, the Catholic historian
Richard Lyon-Dalberg-Acton, 4th Baron Acton (1941–2010), his great-grandson, Labour peer and life peer
John Lyon-Dalberg-Acton, 5th Baron Acton (born 1966), his great-great grandson, writer and farmer
Sir John Acton, 6th Baronet (1736–1811), his grandfather, admiral and Prime Minister of the Kingdom of Naples
Charles Januarius Edward Acton (1803–1847), his uncle, Cardinal of Santa Maria della Pace
Guglielmo Acton (1825–1896), his first cousin once removed, officer in the Neapolitan Navy, attempted to intercept Garibaldi at Marsala
Harold Acton (1904–1994), his distant cousin, writer, dandy and dilettante
Abraham Acton (1893–1915), British Army soldier
Alejandro Acton (born 1972), Argentine cyclist
Alfredo Acton (1867–1934), Italian admiral, politician and Chief of Staff of the Italian Navy
Anna Acton (born 1979), British actress
Brian Acton (born 1972), American computer programmer and Internet entrepreneur
Brigitte Acton (born 1985), Canadian alpine skier
Bud Acton (born 1942), American basketball player
Carlo Acton (1829–1909), Italian composer and pianist
Charles Acton (disambiguation)
Dawn Acton (born 1977), English actress and deejay
Edward Acton (disambiguation)
Eliza Acton (1799–1859), English poet and cook
Ferdinando Acton (1832–1891), Italian naval admiral and politician
Forman S. Acton (born 1920), American computer scientist and writer
H. B. Acton (1908–1974), British writer and philosopher
Henry Acton (1797–1843), English Unitarian minister
James Acton (1848–1924), English cricketer
James M. Acton, British academic and scientist
Joe Acton (1852–1917), English wrestler
John Acton (disambiguation)
Keith Acton (born 1958), Canadian former National Hockey League player
Loren Acton (born 1936), American physicist and astronaut
Marv Acton (born 1944), American NASCAR driver
Prue Acton (born 1943), Australian fashion designer
R. G. Acton (1864/1865–1900), American football coach
Ralph Acton (fl. 14th century), English theologian and philosopher
Sir Richard Acton, 5th Baronet (1712–1791), English baronet
Robert Acton (1497–1558), English politician
Samuel Acton (c.1773–1837), English architect
Scott T. Acton, American professor
Shane Acton, English sailor known for circumnavigating the globe
Thomas Acton (1662–1721), English Jesuit
Thomas C. Acton (1823–1898), American public servant, politician, reformer and police commissioner
Sir Walter Acton, 2nd Baronet (c. 1621–1665), English landowner and politician
Whitmore Acton (c. 1677–1731/32), British baronet and politician
William Acton (disambiguation), several people with this name, including:
William Acton (doctor) (1813–1875), British doctor and writer
Marion Adams-Acton (1846–1928), Scottish novelist
Murray Adams-Acton (1886–1971), English art and architecture historian, and interior designer
Acton Adams (1843–1924), British politician
Acton Smee Ayrton (1816–1886), British barrister and politician
Michael Acton Smith (born 1974), British businessman