- For the Third & Fourth generation Amora sage of babylon, see: Aha b. Jacob. For the Sixth & Seventh generation Amora sage of Babylon, see: Aha b. Raba. For the Savora sage, see: Ahai.
Rabbi Aha (Hebrew: רבי אחא, read as Rabbi Achah) was a Jewish Amora sage of the Land of Israel, of the fourth generation of the Amora era. He resided at Lod, and was a colleague of R. Yehudah b. Pazi. Most of his work on the Halakha and Aggadah is cited in the Jerusalem Talmud and the Midrash, and very few is cited in the Babylon Talmud.