Rabbi Hiyya or Hiyya the Great (ca. 180–230 CE) (Hebrew: רבי חייא, or רבי חייא הגדול) was a Jewish sage of the Land of Israel during the transitional generation between the Tannaic and Amoraic Jewish sages eras (1st Amora Generation). He is accounted as one of the notable sages of these times, and was the son of Abba Karsala from Kafri in Babylon.
His full name is Rabbi Hiyya bar Abba, and so he shares a name with Rabbi Hiyya b. Abba, the 3rd generation Amora of the Land of Israel. Active in Tiberias, Hiyya was the primary compiler of the tosefta. He was also an uncle and teacher of Abba Arika.