Ravina bar Rav Huna, whose full name was Rav Avina bar Rav Huna, known as Ravina II or Ravina the Last (Ravina HaAcharon), was a Babylonian sage of the eighth and final generation of Amoraim. He was most probably the nephew of Ravina I, who became his guardian after his father's death. His father died while he was still an infant, and it was his mother who taught him the family customs and his father's opinions, as the Talmud relates several times; his teacher Mareimar also preserved his father's teachings for him. When he grew up he went to study at the yeshiva of Rav Ashi in Mata Mechasya, a suburb of Sura, where most of the Amoraim of the generation had gathered to continue the editing of the Talmud begun by Ravina I and Rav Ashi.

He was appointed a dayan in the yeshiva, dealing mainly with monetary law; he officiated as judge at Sura shortly after Rav Ashi's death and was a colleague of Mar bar Rav Ashi. After the deaths of Mar bar Rav Ashi and Rabbah Tosfaah, who had preceded him as heads of the Sura academy, he was appointed in 474 rosh yeshiva in Mata Mechasya, a post he held for the last twenty-six years of his life, while Rabbah Yosi headed the academy of Pumbedita. He devoted himself to completing the editing of the Babylonian Talmud and sealing it, a task he finished shortly before his death.

His era was a hard one for the Jews of Babylonia, who suffered persecution from the Magi, priests of the Persian religion, backed by the Sasanian kings, among them Peroz I, called by the Jews Peroz the Wicked, whose decrees included the abduction of Jewish children to be raised as gentiles; these persecutions eventually led to the revolt of the exilarch Mar Zutra.

The Talmudic statement in Bava Metzia 86a, "Rav Ashi and Ravina are the end of instruction" (sof horaah), is applied by Rav Sherira Gaon in his Epistle to Rav Ashi of the sixth generation, who edited the Talmud, and to this Ravina, who sealed it.

According to the Epistle of Rav Sherira Gaon he died in his yeshiva on 13 Kislev 4260 (499), a date also found in Rav Nissim Gaon's introduction to tractate Berachot; the Raavad, in Sefer HaKabbalah, places his death in the very year of his appointment, 474, and Rav Yitzchak Isaac Halevy, in Dorot HaRishonim, emends the Epistle accordingly, but later scholars noted that the "Wednesday, 13 Kislev" mentioned in the Epistle can only fall in 4260. His death marked the end of the era of the Amoraim and the beginning of that of the Savoraim, many of whom were his students, who explained the Gemara and clarified practical halachah. His burial place is not known.