Sax () is a surname. Notable people with the surname include:
Adolphe Sax (1814–1894), Belgian inventor of the saxophone Cole Sax, American director Dave Sax (born 1958), American Major League Baseball player Emil Sax (1845–1927), Austrian economist Geoffrey Sax (sometimes credited as Geoff Sax, born 1949), British film and television director George D. Sax (1904–1974), American business entrepreneur, drive-in bank innovator Gyula Sax (1951–2014), Hungarian chess player Joseph Sax (1936–2014), American environmental law scholars Leonard Sax, American psychologist and physician. Karl Sax (1892–1973), American botanist and geneticist Marjan Sax (born 1947), Dutch feminist lesbian activist Sara Sax (1870–1949), American decorative ceramics artist Steve Sax (born 1960), American Major League Baseball player
See also House of Sax Saxe (surname) Sachs Sacks (surname) Saks (surname) Saxl