Inside the Third Reich is a memoir written by Albert Speer, the Nazi Minister of Armaments from 1942 to 1945, serving as Adolf Hitler's main architect before this period. It is considered to be one of the most detailed descriptions of the inner workings and leadership of Nazi Germany but is controversial because of Speer's lack of discussion of Nazi atrocities and questions regarding his degree of awareness or involvement with them. First published in 1969, it appeared in English translation in 1970.

Berthold Konrad Hermann Albert Speer was a German architect who served as the Minister of Armaments and War Production in Nazi Germany during most of World War II. A close ally of Adolf Hitler, he was convicted at the Nuremberg trial and sentenced to 20 years in prison.