Abstract The article explores the motivation for betrayal and rescue of Jews during the Nazi occupation of Kyiv. Unfortunately, significantly more gentiles betrayed Jews during the occupation of the city than rescued them. The motivations for betrayal varied: traditional anti-Semitism reinforced by Nazi propaganda, some gentiles desired to enrich themselves on the account of Jewish property, to occupy Jewish apartments and to demonstrate their loyalty to the Nazis. Betrayal of Jews was encouraged and rewarded by the Nazis, while rescue of Jews put under mortal risk the gentiles who helped them. Only a few hundred Jews survived in Kyiv during the occupation. Some of them lived under bogus identities, which listed their nationality as Russians or Ukrainians. Others were hidden by their friends, neighbors and gentile spouses. In several cases Jewish children were adopted by gentile families. The article is based on scholarly and memoir literature, and archival materials. Anatoly Kuznetsov provided the most complete eyewitness account of the Nazi occupation of Kyiv and the Babyn Yar massacre in his book Babi Yar: A Document in the Form of a Novel, which is one of the main sources for the article.