Rabbi Aaron Leibowitz is the Director of the Rabbanut Yisraelit program at the Shalom Hartman institute in Jerusalem. In 2012 he founded Hashgacha Pratit, an organization which broke the monopoly of the Chief Rabbinate of Israel over Kosher Supervision, and in 2018 he launched the Chuppot initiative to challenge the monopoly by providing Orthodox weddings independent of the Rabbanut.

Ordained by Rabbi Shlomo Riskin and Rabbi Chaim Brovender in 1996 he currently serves as the Rabbi of the Vaani Teffilah community in Nachlaot, Jerusalem. Rav Aaron served as a Jerusalem City Council member from 2015 to 2018, representing the pluralistic Yerushalmim party, and holding the education portfolio.