Jewish identity is the objective or subjective sense of perceiving oneself as a Jew and as relating to being Jewish. It encompasses elements of nationhood, ethnicity, religion, and culture. Broadly defined, Jewish identity does not rely on whether one is recognized as Jewish by others or by external religious, legal, or sociological standards. Jewish identity does not need to imply religious orthodoxy. Accordingly, Jewish identity can be ethnic or cultural in nature. Jewish identity can involve ties to the Jewish community.
Conservative and Orthodox Judaism base Jewishness on matrilineal descent. According to Jewish law (halakha), all those born of a Jewish mother are considered Jewish, regardless of personal beliefs or level of observance of Jewish law. Progressive Judaism and Haymanot Judaism in general base Jewishness on having at least one Jewish parent, while Karaite Judaism bases Jewishness only on paternal lineage. While these differences between the major Jewish streams are a source of the disagreement and debate about who is a Jew, all interpretations of Rabbinic Judaism agree that a valid Jewish identity may also be achieved via conversion.