Janowitz is a surname, a Yiddish-language variant of the Polish-language surname Janowicz. Notable people with the surname include:

Gundula Janowitz (born 1937), Austrian singer

Hans Janowitz (1890–1954), Czech-German writer

Morris Janowitz (1919–1988), American sociologist Tama Janowitz (born 1957), American writer Will Janowitz (born 1980), American actor

See also