Rabbinic Judaism (Hebrew: יהדות רבנית, romanized: Yahadut Rabanit), also called Rabbinism, Rabbinicism, or Judaism espoused by the Rabbanites, has been the mainstream form of Judaism since the 6th century CE, after the codification of the Babylonian Talmud. Rabbinic Judaism has its roots in Pharisaic Judaism and is based on the belief that Moses at Mount Sinai received both the Written Torah (Torah she-be-Khetav) and the Oral Torah (Torah she-be-al Peh) from God. The Oral Torah, transmitted orally, explains the Written Torah. At first, it was forbidden to write down the Oral Torah because the rabbis feared that it would become rigid and lose its flexibility, but after the destruction of the Second Temple, they decided to write it down in the Talmud and other rabbinic texts.

Rabbinic Judaism contrasts with the Sadducees, Karaite Judaism and Samaritanism, which do not recognize the Oral Torah as a divine authority nor the rabbinic procedures used to interpret Jewish scripture. Although there are now profound differences among Jewish denominations of Rabbinic Judaism with respect to the binding force of halakha (Jewish religious law) and the willingness to challenge preceding interpretations, all identify themselves as coming from the tradition of the Oral Law and the rabbinic method of analysis.