re'em

thumb|Detail of a former floor mosaic dating from year 1213, Basilica of San Giovanni Evangelista, Ravenna. thumb|Oryx in [[Yotvata Hai-Bar Nature Reserve in Israel.]]

A '''re'em, also reëm' (), is an animal mentioned nine times in the Hebrew Bible. It has been translated as "unicorn" in the Latin Vulgate, King James Version, and in some Christian Bible translations as "oryx" (which was accepted as the referent in Modern Hebrew), "wild ox", "wild bull", "buffalo" or "rhinoceros". Natan Slifkin has argued that the re'em'' was an aurochs, as has Isaac Asimov before him.