Berthold Konrad Hermann Albert Speer (; March 19, 1905 – September 1, 1981) was a German architect who was, for a part of World War II, Minister of Armaments and War Production for Nazi Germany. Speer was Adolf Hitler's chief architect before assuming ministerial office. As "the Nazi who said sorry", he accepted moral responsibility at the Nuremberg trials and in his memoirs for complicity in crimes of the Nazi regime, while stating he was ignorant of the Holocaust.