A rebbetzin is the wife of a rabbi, a title carrying, particularly within Orthodox and traditional Jewish communities, informal but often quite substantial communal standing and pastoral responsibility of its own, distinct from any formal ordination or credential; a rebbetzin frequently teaches women's classes, provides pastoral counseling particularly to women in the congregation on matters a female communal figure may be approached about more readily than a male rabbi, and, in many congregations, plays a significant, if informally defined, role in shaping the community's social and religious life alongside her husband's more formally credentialed rabbinic position.
The role has evolved considerably as women's Jewish education and communal leadership options have expanded: some contemporary rebbetzins hold significant formal Jewish learning of their own, in some cases comparable to rabbinic-level scholarship, and a number of Orthodox institutions have developed formal training and certification programs, producing titles such as yoetzet halacha, a woman certified to answer questions of Jewish law in specific areas, particularly family purity law, that exist alongside and sometimes independently of the traditional rebbetzin role defined purely through marriage to a rabbi, reflecting a broader expansion of formally recognized female religious authority within Orthodox Judaism even where full rabbinic ordination for women remains contested.