Rabbi Zeira (Hebrew: רבי זירא), known before his semicha as Rav Zeira (Hebrew: רב זירא) and known in the Jerusalem Talmud as Rabbi Ze'era (Hebrew: רבי זעירא), was a Jewish Talmudist, known as an Amora, who lived in the Land of Israel, of the third generation. He was born in Babylonia, where he spent his early youth. He was a pupil of Ḥisda (Ber. 49a), of Huna (ib.), and of Judah b. Ezekiel in Pumbedita.
He associated also with other prominent teachers of the Babylonian school, as Naḥman b. Jacob (Yer. Ber. 8c), (Zeb. 105b; Ber. 24b), and Sheshet, who called him a great man ("gabra rabba"; 'Er. 66a). His love for the Holy Land led him to decide upon leaving his native country and emigrating to Israel. This resolve, however, he kept secret from his teacher Judah, who disapproved of any emigration from Babylonia. Before leaving, he spied upon Judah while the latter was bathing, and the words which he then overheard he took with him as a valuable and instructive memento (Shab. 41a; Ket. 110b).