Margarete Adam (13 July 1885 – January 1946) was a German feminist philosopher and university teacher. She fell foul of the authorities after 1933 because she had already been critical of the Nazi Party in print and then, after the Nazis took power, got into the habit of writing to senior army commanders and others in the public eye, advocating the overthrow of Hitler. She died early in January 1946 as a result of mistreatment suffered in German jails between 1937 and 1944.