Flint is a surname. Notable people with the surname include:

• Austin Flint (1812–1886), American physician
• Austin Flint (1836–1915, American physician
• Bob Flint (born 1941), American/Hawaiian ceramicist
• Bruiser Flint (born 1968), American basketball coach
• Caroline Flint (born 1961), British Member of Parliament for the Don Valley
• Charles Ranlett Flint (1850–1934), American merchant and banker
• Dave Flint (born 1971), American ice hockey coach
• Derrick Flint (1924–2018), English cricketer
• Douglas Flint (born 1955), British banking businessman currently the Group Chairman of HSBC Holdings
• Edwin Flint (1814-1891), American politician
• Eric Flint (1947–2022), American science fiction and fantasy author and editor
• F. S. Flint (1885-1960), English poet
• George Flint (American football) (born 1939), American football player
• George Washington Flint (1844–1921), American educator and college president
• Henry Flynt (born 1940), American avantgarde musician
• James Flint (disambiguation), multiple people
• Jeremy Flint (1928–1989), English contract bridge player
• Jon Flint (Jonathan A. Flint), American venture capitalist and entrepreneur
• Josh Flint (born 2000), English footballer
• Joshua Barker Flint (1801–1864), American surgeon and professor of medicine
• Judson Flint (1957–2018), American football player
• Katja Flint (born 1960), German actress
• Keith Flint (1969–2019), member of the British band The Prodigy
• Kenneth C. Flint, American fantasy novelist
• Larry Flynt (1942–2021), American magazine publisher (commonly misspelled "Flint")
• Paul Flint, (born 1987), British Tattoo Artist and skateboarder
• Richard Foster Flint (1902–1976), American geologist
• Robert Flint (disambiguation), multiple people
• Rockwell J. Flint (1842-1933), American politician
• Roland Flint (1934-2001), American poet
• Valerie Flint (1936-2009), British historian
• Vladimir E. Flint (1924–2004), Russian zoologist and conservationist
• Waldo Flint (1820-1900), American politician
• William Russell Flint (1880–1969), Scottish artist

Fictional characters:

• Derek Flint, the title character of Our Man Flint (1966) and In Like Flint (1967), a "hipster spy" played by James Coburn
• Marcus Flint, character in the Harry Potter series

• Flinth, surname