Schmitz is a common German surname (smith), which may refer to:
Bob Schmitz (1939–2004), American football player
Bruno Schmitz (1858–1916), German architect
Danny Schmitz (born 1955), American college baseball coach
Greg Dean Schmitz (born 1970), American online film journalist
Hector Aron Schmitz or Ettore Schmitz (1861–1928), birthname of the Italian author Italo Svevo
James H. Schmitz (1911–1981), American science fiction writer
Jim Schmitz, American college baseball coach
Johannes Andreas Schmitz (1621–1652), Dutch physician
John G. Schmitz, American presidential candidate
Johnny Schmitz (1920-2011), American baseball player
Joseph E. Schmitz (born 1958), former US Department of Defense official and Blackwater executive
Kim Schmitz (born 1974), German entrepreneur
Leonhard Schmitz (1807–1890), German-born classical scholar and educator active mainly in the United Kingdom
Oliver Schmitz (born 1960), South African film director
Ralf Schmitz (born 1974), German actor
Richard Schmitz (1885–1954), mayor of Vienna, Austria
E. Robert Schmitz (1889–1949), a Franco-American pianist and composer
Sabine Schmitz (born 1969), German race driver
Sascha Schmitz (born 1972), German pop singer
Sybille Schmitz (1909–1955), German actress
The following places bear the name Schmitz:
Schmitz Lake, a lake in South Dakota
Schmitz Park (Seattle)
Schmitz Park Creek