Wiedermann is a German surname. It is an alternate spelling of Wiedemann, and a variant of Widmann. Notable people with the surname include:
Bedřich Antonín Wiedermann (1883–1951), Czech organist, composer, and teacher Herbert Wiedermann (born 1927), Austrian sprint canoer Helga Hellebrand-Wiedermann (1930–2013), Austrian sprint canoer
See also Wiedemann
References