Ahearn \a-hearn, ahe(a)-rn\ as a boy's name is of Celtic origin, and the meaning of Ahearn is "horse-lord".

Ahearn has 8 variant forms: Ahearne, Aherin, Ahern, Aherne, Hearn, Hearne, Herin and Hern.

A baby name that sounds like Ahearn is Aharon.