Fechner is a surname. Notable people with the surname include:
Carl-A. Fechner (born 1952), German documentary filmmakerChristian Fechner (1944–2008), French film producer and screenwriterGustav Fechner (1801–1887), German experimental psychologist, physicist and philosopherHarry Fechner (born 1950), German football defenderMax Fechner (1892–1973), Minister of Justice of the GDRRobert Fechner (1876–1939), American union leaderSebastian Fechner (born 1983), Polish footballer