Fischler is a German Jewish surname. Notable people with the surname include:
Abraham S. Fischler (1928–2017), American academic Claude Fischler (born 1947), French social scientist Franz Fischler (born 1946), Austrian politician Georg Fischler (born 1985), Austrian luger Patrick Fischler (born 1969), American character actor Stan Fischler (born 1932), American historian, broadcaster, author and professor Willy Fischler (born 1949), Belgian theoretical physicist
See also Fischler–Susskind mechanism