Fechner is a surname. Notable people with the surname include:
Carl-A. Fechner (born 1952), German documentary filmmaker
Christian Fechner (1944–2008), French film producer and screenwriter
Gustav Fechner (1801–1887), German experimental psychologist, physicist and philosopher
Harry Fechner (born 1950), German football defender
Max Fechner (1892–1973), Minister of Justice of the GDR
Robert Fechner (1876–1939), American union leader
Sebastian Fechner (born 1983), Polish footballer
