Anglicisation of the Hebrew Aharon. In the Bible, Aaron was the brother of Moses. It is the name of 'the Moor', the lover of Tamora, in Shakespeare's 'Titus Andronicus'.

Other famous bearers include TV producer Aaron Spelling, pop singer Aaron Carter and composer Aaron Copland. Aaron went through a period of relative obscurity in English usage after the nineteenth century, but it became quite popular again in the late twentieth century.