Langdon is a surname. Notable people with the surname include:
Chauncey Langdon (1763–1830), American politician, lawyer and judge
Craig Langdon (born 1957), Australian politician
Darren Langdon (born 1971), Canadian former National Hockey League player
David Langdon (1914-2011), English cartoonist
Emma F. Langdon (1875-?), American union activist
George C. Langdon (1833-1909), mayor of Detroit (1878-1879)
Harry Langdon (1884-1944), American comedian and silent-movie actor
Jeffrey Langdon (born 1975), Canadian figure skater
John Langdon (disambiguation)
Julia Langdon (born c. 1946), British journalist, newspaper political editor and writer
Lillian Langdon (1860–1943), American film actress of the silent era
Margaret Langdon (died 2005), linguist
Michael Langdon (1920-1991), British bass singer
Oliver Langdon, Canadian educator and former politician
Olivia Langdon Clemens (1845-1904), wife of American writer and humorist Samuel Clemens (Mark Twain), maiden name Langdon
Reuben Langdon, American actor and stuntman
Richard Langdon (1730–1803), British cathedral organist
Royston Langdon (born 1972), lead singer and bassist of the British glam rock band Spacehog
Samuel Langdon (1723-1797), American Congregational clergyman, educator and president of Harvard University
Shawn Langdon, American drag racer and winner of the 2013 NHRA Top Fuel championship
Stephen Herbert Langdon (1876-1937), American-born British Assyriologist
Steven W. Langdon (born 1946), Canadian politician and economist
Steve J. Langdon (born 1948), American anthropologist
Steve Langdon (hockey player) (born 1953), Canadian former ice-hockey player
Sue Ane Langdon (born 1935), American actress
Thomas Langdon (cricketer) (1879–1944), English cricketer
Thomas Langdon (MP) for Canterbury (UK Parliament constituency)
Tom Langdon (born 1994), Australian rules football player
Trajan Langdon (born 1976), American retired basketball player
Woodbury Langdon (1739–1805), American merchant, statesman and justice
Fictional characters:
Robert Langdon, fictional character created by author Dan Brown
Tate Langdon (born 1977), fictional serial killer in the American Horror Story TV series
