Federation of Expellees
Wittmann was born in Plan bei Marienbad () in Czechoslovakia's Egerland. He was a member of the German Parliament (first elected in 1971), where he represented Munich North, and president of the Federation of Expellees ("Bund der Vertriebenen") from 1994–1998. He was succeeded as president of the federation by Erika Steinbach (CDU).