Janz is a given name and a surname. It may refer to:
People Source: Given name Janž Tulščak (? – c. 1594), Slovene Protestant preacher and writer Jan Janz Slop, or Jan Slob (1643–1727), Dutch Golden Age painter Geoff Jansz or Jeff Janz (born 1958), Sri Lankan-born Australian chef and television presenter
Surname Alicia Janz (born 1990), Australian rules footballer B. B. Janz (1877–1964), minister of the Mennonite Brethren Church Helmut Janz (1934-2000), German track and field athlete Josie Janz-Dawson (born 1988), Australian netball player Karin Büttner-Janz (born 1952), East German medical doctor and athlete Paul Janz (born 1951), Canadian musician Robert Janz (1932-2021), American artist Thiele Janz (born 1957) Mathematician
Places Šentjanž (disambiguation), a number of municipalities in Slovenia
Other Janz, a German firearms manufacturer
See also Jansz or Janszoon, a number of persons
References