Hammer is a surname. Notable people with the surname include:
A. J. Hammer (born 1966), American television and radio personality Angela Hutchinson Hammer (1870–1952), American newspaper publisher Anna M. Hammer (1840–1910), American philanthropist and temperance movement leader Anthony Hammer, Australian actor Armand Hammer (1898–1990), U.S. physician, entrepreneur, oil magnate and art collector Armie Hammer (born 1986), American actor Barbara Hammer (1939–2019), American film maker Beatrice Hammer (born 1963), French writer Bernhard Hammer (1822–1907), Swiss president Bob Hammer (1930–2021), American jazz pianist, composer and arranger Caleb Hammer (born 1995), American YouTuber Caroline Hammer (1832–1915), Danish photographer Cec Hammer (1926–2013), Australian rules footballer Charles Christian Hammer (1952–2004), American classical guitarist Christina Hammer (born 1990), German boxer Chuck Hammer, American guitarist and composer Dan Hammer, American software engineer, entrepreneur and environmental economist Dan Hammer (baseball) (born 1997), American baseball player Daniela Hammer-Tugendhat (1946–2025), Austrian art historian Dick Hammer (1930–1999), American Olympic athlete and actor Doc Hammer (born 1967), American voice actor, musician, writer and artist Edward E. Hammer (1931–2012), American engineer who was at the forefront of fluorescent lighting research Ellen Hammer (1921–2001), American historian Emanuel Frederick Hammer (1926–2005), American psychologist and author Emerson Hammer (1856–1940), American politician Ernest E. L. Hammer (1884–1970), American lawyer, politician, and judge Ernst Hammer (1884–1957), highly decorated Generalleutnant in the Wehrmacht during World War II
Fred Hammer (1930–2020), Luxembourgish sprinter Frederic E. Hammer (1909–1980), New York politician and judge Friedrich Julius Hammer (1810–1862), German poet Graeme Hammer, Australian crop scientist Heathcote Hammer (1905–1961), Australian World War II general J. D. Hammer (born 1994), American baseball player Jan Hammer (born 1948), Czech-American musician, composer, and record producer Jay Hammer (born 1944), American actor John Hammer (born 1935), Australian sports administrator, founder of competitions for older players Jon Ludvig Hammer (born 1990), Norwegian chess player Jørgen Hammer (born 1991), Norwegian association football player Joshua Hammer (born 1957), American journalist Julie Hammer (born 1955), Royal Australian Air Force air vice marshal Kim Hammer (born 1958), American politician from Arkansas Kristian Hammer (born 1976), Norwegian Nordic combined skier Lance Hammer, American independent filmmaker Lisa Hammer (born 1967), American filmmaker, actress, composer and singer Lukas Hammer (born 1983), Austrian politician Marion P. Hammer, American gun rights activist, president of the National Rifle Association Michael Hammer (disambiguation), multiple people
Mike Hammer (diplomat) (born 1963), in the U.S. State Department Moshe Hammer (born 1946), Canadian violinist Paul Hammer (1900–1978), Luxembourgish sprinter and long jumper Peter Ladislaw Hammer (1936–2006), Romanian-born American mathematician Reuven Hammer (1933–2019), American Conservative Jewish rabbi, scholar, author and lecturer Richard Hammer (1897–1969), German politician Sarah Hammer (born 1983), American professional racing cyclist and two-time Olympic silver medalist Simon Christian Hammer (1866–1932), Norwegian writer and journalist Victor Hammer (1882–1967), Austrian-born American painter, sculptor, printer and typographer Will Hammer, pseudonym of William Hinds (1887–1957), American co-founder of Hammer Film Productions William C. Hammer (1865–1930), U.S. Representative from North Carolina William H. Hammer, founder Hammer & Co., South Australian photographers William Joseph Hammer (1858–1934), American electrical engineer and aviator; president of the Edison Pioneers Zach Hammer (born 2006), American speed climber Zevulun Hammer (1936–1998), Israeli politician
Fictional Mike Hammer (character), a fictional hard boiled detective Mickey Spillane's Mike Hammer (1958 TV series) Mickey Spillane's Mike Hammer (1984 TV series) Justin Hammer, fictional businessman from the Marvel series
See also Joseph von Hammer-Purgstall (1774–1856), Austrian orientalist MC Hammer (born 1962), stage name of American rapper Stanley Kirk Burrell