Renate von Natzmer (1898 - February 18, 1935) was a German noblewoman who worked for the army during the Weimar Republic and Third Reich. She also worked for Polish intelligence. In the early 1930s, she met Polish agent major Jerzy Sosnowski and she became, like her friend Benita von Falkenhayn, his lover. They were arrested for spying and treason. Von Falkenhayn and von Natzmer were found guilty and sentenced to death.