Firth is a surname. Notable people with the surname include:
Anna Firth (elected 2022), British politician Barbara Firth (1928–2013), British illustrator Brad Firth (born ), Gwichʼin Canadian long-distance runner Cecil Mallaby Firth (1878–1931), English archaeologist Charles Firth (comedian), Australian comedian Charles Firth (coach), former head coach Charles Harding Firth (1857–1936), British historian Colin Firth (born 1960), British actor David Firth (born 1983), British animator Edith Firth (1927–2005), Canadian historian and librarian Everett Firth (1930–2015), American musician and businessman Harry Firth (1918–2014), Australian racing driver and race team manager Henry Firth (1888–1918), British conscientious objector Jack Firth (1917–1981), English cricketer John Rupert Firth (1890–1960), British linguist John Firth (1900–1957), British cricketer John C. B. Firth (1894–1931), British flying ace Jonathan Firth (born 1967), British actor Joseph Firth (1859–1931), New Zealand educator Josiah Firth (1826–1897), New Zealand farmer, businessman and politician Julian Firth (born 1960) British actor Malaika Firth (born 1994), British–Kenyan model Mark Firth (1819–1880), British steel magnate Matilda Firth (born 2014), English actress Nicholas Firth, British businessman Peter Firth (born 1953), British actor Peter Firth (bishop) (1929–2024), English Anglican bishop Robert Hammill Firth (1857–1931), British Army surgeon and professor of military hygiene Roy Firth (born ), rugby league footballer Scott Firth, British musician and producer Scott Firth (soccer) (born 2001), Canadian soccer player Shirley Firth (1953–2013), Canadian cross-country skier Raymond Firth (1901–2002), New Zealand anthropologist Vic Firth (1930–2015), American percussionist, founder of Vic Firth Company Will Firth (born 1965), Australian literary translator