Rabbi Jacques Cukierkorn was born in Sao Paulo, Brazil, and ordained at Hebrew Union College (Cincinnati, Ohio). He hails from a line of Hasidic Polish rabbis who emigrated to Brazil in 1929. His maternal grandfather came to Uruguay in 1930 where he became one of the founders of that Jewish community.

He is considered an expert on the so-called anusim, the descendents of Jews who were forced to convert to Christianity but who maintained their Jewish identity secretly, in some cases until today. And he is the founder of Brit Brajá, the first web-based international Spanish Jewish community.

As an advisor for international organizations, such as Kulanu, Rabbi Cukierkorn has been a key player in some of the most controversial mass "returnings" of Jews to the rest of the tribe, from the crypto-Jews of northern Brazil to the Abayudaba of Uganda. He is dedicated to helping people learn about Judaism and has helped over 400 people (to date) convert or return, mainly in Latin America but also in Europe and the United States.

He is the author of guides to Judaism now available in English, Spanish and Portuguese: Accessible Judaism: A Concise Guide to Judaism, HaMadrij: La Guía and Judaísmo acessível: Um guía conciso dos valores e práticas do Judaísmo moderno (digital). He is co-author, with Bill Tammeus, of They Were Just People: Stories of Rescue in Poland During the Holocaust. And he also writes often for several newspapers and magazines.

Rabbi Cukierkorn is the spiritual leader of Temple Israel of Greater Kansas City. He served as Vice-President of the Society for Classical Reform Judaism and as former President of the Rabbinical Association of Greater Kansas City.

He is married to Denisse and is the father of two daughters. He and his family reside in Overland Park, Kansas, USA.