Schmitt is a German surname. Notable people with the surname include:

• Adam Schmitt (born 1968), American singer/songwriter
• Al Schmitt (1930–2021), American recorded music engineer
• Alain Schmitt (born 1983), French judoka
• Alfred Schmitt (1907–1973), French astronomer
• Allison Schmitt (born 1990), American Olympic swimmer
• Father Aloysius Schmitt (1909–1941), Roman Catholic priest who died at Pearl Harbor
• Antoine Schmitt (born 1961), French artist, programming engineer and designer
• Anton Schmitt (died 1916), German sailor killed during World War I
• Arnd Schmitt (born 1965), German fencer and Olympic champion
• Bernadotte Everly Schmitt (1886–1969), American historian
• Bernd Schmitt (born 1957), American scholar in marketing and business psychology
• C. L. Schmitt (1912–1993), Pennsylvania legislator
• Carl Schmitt (1888–1985), German intellectual, and jurist
• Carl Schmitt (artist) (1889–1989), American artist
• Casey Schmitt (born 1999), American baseball player for the San Francisco Giants
• Conrad Schmitt (1867–1940), American artist and founder of Conrad Schmitt Studios in Wisconsin
• Cornel Schmitt (1874–1958), German pedagogue, naturalist, music composer, and writer
• David P. Schmitt, American psychologist
• Dennis Schmitt (born 1960), American explorer
• Donald Schmitt (born 1951), Canadian architect
• Ernesto Schmitt (born 1972), German/Uruguayan Entrepreneur
• Edgar Schmitt (born 1963), retired German football player
• Else Schmitt (1921–1995), German politician
• Eric Schmitt (born 1975), American politician from Missouri
• Eric P. Schmitt (born 1959), Pulitzer Prize–winning American journalist
• Éric-Emmanuel Schmitt (born 1960), French writer
• Erich Schmitt (1912–1979), Swiss field handball player
• Francis O. Schmitt (1903–1995), American scientist
• Florent Schmitt (1870–1958), French composer
• Frieda Schmitt-Lermann (1885-?), German composer
• Gary Schmitt (born 1952), American neo conservative political analyst
• Gladys Schmitt (1909–1972), American writer, editor, and college professor
• Graziella Schmitt (born 1981), Brazilian actress
• Harrison Schmitt (born 1935), American former astronaut and New Mexico Senator; twelfth man to walk on the Moon
• Hugo Schmitt (1904-1977), German-American elephant trainer
• Hélène Schmitt, prize-winning French violinist
• Ingo Schmitt, German politician
• Janis Schmitt (born 1947), American model and actress
• Jean-Claude Schmitt (born 1946), French medievalist
• Jim Schmitt (born 1958), American politician from Wisconsin
• Johan Schmitt (1881–1955), Dutch gymnast
• John Schmitt (economist) (born 1962), American economist
• John Schmitt (American football) (born 1942), American football player
• John Schmitt (rower) (1901–1991), American Olympic rower
• Joseph Schmitt (1734–1791), German/Dutch composer, conductor, music director, publisher, music theorist and pedagogue
• Julie Schmitt (1913–2002), German Olympic gymnast
• Justin Schmitt (born 1974), Australian rules football field umpire
• Kurt Schmitt (1886–1950), German economic leader

• Logan Giulietti-Schmitt (born 1985), American ice dancer
• Ludwig Schmitt (1902–1980), German chess master
• Mark Schmitt, American political scientist and author
• Mark Francis Schmitt (1923–2011), American Roman Catholic bishop
• Martin Schmitt (born 1978), German ski jumper
• Matías Schmitt (born 1991), Argentine snowboarder
• Michael N. Schmitt (born 1956), American law scholar
• Morgan Schmitt (born 1985), American road bicycle racing cyclist
• Owen Schmitt (born 1985), American football player
• Otto Schmitt (1913–1998), American inventor and biophysicist
• Otto Schmitt (field hockey) (born 1965), Argentine field hockey goalkeeper
• Pál Schmitt (born 1942), ex-president of Hungary
• Pete Schmitt (born 1984), American football fullback
• Peter J. Schmitt (1950–2012), American politician from New York
• Philipp Schmitt (1902–1950), German SS commandant of Nazi prison camp executed for war crimes
• Ralf Schmitt (born 1977), German football player
• Ricky Schmitt (born 1985), American football punter
• Rob Schmitt (1986), American television journalist
• Rodolfo Schmitt (born 1974), Argentine retired field hockey player
• Roland W. Schmitt (1923–2017), American physicist, business executive and president of Rensselaer Polytechnic Institute
• Rudolf Schmitt (1830–1898), German chemist and co-discoverer of the Kolbe-Schmitt reaction
• Sebastian Schmitt (born 1996), German basketball player
• Sven Schmitt (born 1976), German football player
• Tchavolo Schmitt (born 1954), guitarist in gypsy jazz
• Ted Schmitt (1916–2001), American football player
• Thilo Schmitt (born 1982), German slalom canoer
• Thorsten Schmitt (born 1975), German Olympic skier
• Tyler Schmitt (born 1986), American football long snapper
• Waldo L. Schmitt (1887–1977), American biologist

• Schmidt (disambiguation)
• Schmit, a surname
• Schmitt Brothers, barbershop quartet
• Schmitten (disambiguation)