亚伦（Aaron），旧约圣经人物，摩西的兄长，属利未支派。他是古以色列人的第一位大祭司，亦是祭司职位的始创人。

当摩西向埃及法老王请求释放以色列人时，他是代表摩西与埃及法老打交道的发言人。以色列人民出走时，与摩西为伴。虽然期间他曾带领以色列人拜金牛犊，但仍然得到原谅。在建造约柜和圣所之后，他和他的儿子们被授予圣职为祭司，并被称为亚伦子孙（Aaronites）。以色列人出了埃及地后四十年，五月初一日，祭司亚伦遵着耶和华的吩咐上何珥山，就死在那里。亚伦死在何珥山的时候年一百二十三岁。

In the Hebrew Bible and the Quran, Aaron אַהֲרֹן (UK /ˈɛərən/, US /ˈærən/) was the older brother of Moses (Exodus 6:16-20, 7:7; Qur'an 28:34) and a prophet of God. Unlike Moses, who grew up in the Egyptian royal court, Aaron and his elder sister Miriam remained with their kinsmen in the eastern border-land of Egypt (Goshen). When Moses first confronted the Egyptian king about the Israelites, Aaron served as his brother's spokesman ("prophet") to Pharaoh. (Exodus 7:1) Part of the Law (Torah) that Moses received from God at Sinai granted Aaron the priesthood for himself and his male descendants, and he became the first High Priest of the Israelites. Various dates for his life have been proposed, ranging from approximately 1600 to 1200 BC. Aaron died before the Israelites crossed the Jordan river and he was buried on Mount Hor (Numbers 33:39; Deuteronomy 10:6 says he died and was buried at Moserah). Aaron is also mentioned in the New Testament of the Bible.