Ebionites (Ancient Greek: Ἐβιωναῖοι, romanized: Ebiōnaîoi, derived from Hebrew language אֶבְיוֹנִים, ʾEḇyōnīm, meaning 'the poor' or 'poor ones') as a term refers to a nontrinitarian Mosaic Law-observant Jewish-Christian sect that existed in Palestine and Transjordan during the early centuries of the Common Era.
Since historical records by the Ebionites are scarce, fragmentary and disputed, much of what is known or conjectured about them derives from the polemics of their Gentile-Christian opponents, specifically the Church Fathers—Irenaeus, Origen, Eusebius, and Epiphanius of Salamis—who saw the Ebionites as an unorthodox sect more or less distinct from other Jewish-Christian sects, such as the Nazarenes.