Arn \a-rn\ as a boy's name is a variant of Arnold (Old French, Old German), and the meaning of Arn is "eagle ruler".

The baby name Arn sounds like Arun, Aron, Arin, Aren, Aran, Arne, Arni, Arno and Arny. Other similar baby names are Ari, Ara, Ard, Ary, Arnd, Art and Arv.