Hartley is a surname. Notable people with the surname include:
Adele Hartley, Edinburgh film festival organiser
Aidan Hartley (born 1965), British journalist
A. J. Hartley, British-born New York Times-bestselling author and Shakespearean dramaturg
Al Hartley (1921–2003), American comic book writer
Sir Andreas de Harcla, or Andrew Harclay, 1st Earl of Carlisle (c. 1270 – 1323)
A. N. Hartley (1902–1994), English dog breeder
Alex Hartley (born 1963), British artist
Alfred Hartley (1879–1918), English cricketer
Ann Hartley (born 1942), former New Zealand member of parliament
Anne Jane Hartley, birth name of the actress Ann Gilbert
Anthony Hartley (1925–2000), British writer and critic
Arthur Hartley (1889–1960), British civil engineer
Bill Hartley (activist) (1930–2006), Australian political activist
Bill Hartley (writer/presenter) (1911-1970), British broadcaster and writer, presented Motoring and the Motorist for the BBC
Bill Hartley (athlete) (born 1950), English former athlete
Blythe Hartley (born 1982), Canadian Olympic diver
Bob Hartley (born 1960), Canadian National Hockey League coach
Brendon Hartley (born 1989), New Zealand racing car driver
Bria Hartley (born 1992), American basketball player
Charles Augustus Hartley (1825–1915), British, Victorian-era engineer
David Hartley (computer scientist), (born 1937)
David Hartley (philosopher) (1705–1757), English philosopher and psychologist
David Hartley (the Younger) (1731–1813), Member of Parliament and son of the English philosopher
Dylan Hartley (born 1986), England rugby union player
Edmund Barron Hartley (1847–1919), British Victoria Cross recipient
Elizabeth Hartley (Girl Guides) (born 1906), English Girl Guide and author
Elizabeth Hartley (actress) (1751–1824), English actress
Fergal Hartley (born 1973), Irish hurler
Fred A. Hartley, Jr. (1902–1969), U.S. politician, known for sponsoring the Taft-Hartley Act
Gene Hartley (1926–1993), American racecar driver
Grover Hartley (1888–1964), American baseball player
Hal Hartley (born 1959), American film director
Herman Otto Hartley (1912–1980), German-American statistician
J. R. Hartley, a fictional character and an author's pseudonym
Jess Hartley (born 1967), American author and writer
Jesse Hartley (1780–1860), British civil engineer
John Hartley (disambiguation), several people including:
John Hartley (poet) (1839–1915), English poet
John Anderson Hartley (1844–1896), Australian educationalist
John Hartley (tennis) (1849–1935), English clergyman who won Wimbledon
John Hartley (cricketer) (1874–1963), English cricketer, played for Oxford and Sussex
Jonathan Scott Hartley (1845–1912), American sculptor
Julia Hartley-Brewer, British journalist
Justin Hartley (born 1977), American actor
Keef Hartley (born 1944), British musician
L. P. Hartley (1895–1972), British author
Linda Hartley-Clark (born 1966), Australian actress
Lindsay Hartley (born 1978), American singer and actress
Mariette Hartley (born 1940), American actress
Marsden Hartley (1877–1943), American artist
Matthieu Hartley (born 1960), English musician
Mike Hartley (born 1961), American former baseball player
Nina Hartley (born 1959), adult-film actress
Oliver C. Hartley (1823–1859), American lawyer
Paul Hartley (born 1976), Scottish footballer
Peter Hartley (cricketer) (born 1960), English former cricketer
Peter Hartley (footballer) (born 1988), English footballer
Ralph Hartley (1888–1970), American electronics researcher
Richard Hartley (born 1944), British composer
Robert Hartley (born 1915), British stage, film and television actor
Steven Hartley (born 1960), British actor
Sue Hartley, British ecologist
Thomas Hartley (1748–1800), American lawyer
Vivian Hartley (1913–1963), birth name of the actress Vivien Leigh
Wallace Hartley (1878–1912), English violinist and band leader who died on the Titanic
Walter Hartley (born 1927), American composer
William James Hartley (born 1945), former Canadian politician and restaurateur
Sir William Pickles Hartley (1846–1922), founder of the eponymous jam company in England
