Sax is a surname. Notable people with the surname include:
Adolphe Sax, the inventor of the saxophoneDave Sax, Major League Baseball playerEmil SaxGeoffrey Sax, sometimes credited as Geoff Sax, film and television directorGeorge D. Sax, Business entrepreneur, drive-in bank innovatorGyula Sax, Hungarian chess playerJoseph Sax, American environmental law scholarsLeonard Sax, American psychologist and physician.Karl Sax, American botanist and geneticistSteve Sax, Major League Baseball player