Klotz as a surname (German for block) can refer to:
Klotz (violin makers), a family of German violin makers (also spelt Kloz and Cloz)
People Adolf Klotz, Croatian linguist and writer August Klett (Pseudonym: August Klotz), German artist Christian Adolph Klotz (1738–1771), German philosopher and writer Christopher Klotz (born 1984), American soccer player Clemens Klotz (1886–1969), German architect Clyde Klotz (born 1961), art director Florence Klotz (1920–2006), costume designer Frank Klotz (born 1950), American Air Force general Hans Klotz (1900–1987), German organist and musicologist Ignatius Klotz (1843–1911), American farmer and politician Jeff S. Klotz (born 1990), German author, publisher, museum director and entrepreneur Józef Klotz (1900–1941), Polish footballer Karlheinz Klotz (born 1950), German sprinter Louis Klotz, basketball player Louis-Lucien Klotz (1868–1930), French politician Martin Klotz (fl. 1800), Austrian mountaineer Mathias Klotz (born 1965), Chilean architect Vuk Lungulov-Klotz (born 1994), Chilean-Serbian filmmaker Matthew Klotz (born 1996), American male deaf swimmer and reality television contestant. Nicolas Klotz (born 1954), French film director Otto Julius Klotz (1852–1923), Canadian astronomer and Dominion Surveyor Red Klotz (1920–2014), American basketball player Reinhold Klotz (1807–1870), German classical scholar Robert Klotz (1819–1895), American politician Sebastian Klotz (1696–1775), violin maker Sibyll-Anka Klotz (born 1961), German politician Stevo Klotz (born 2001), American football player Suzanne Klotz (born 1944), artist Ulrike Klotz (born 1970), German gymnast
Characters Hans Klot, from the French television series Code Lyoko Roger Klotz, from the American television series Doug
See also Cloots