Meaning Alen is a boy name of Celtic origin, it means 'little rock', 'harmony' and 'peace'. It is a variant of the name Alan. Origin of Alen Celtic , Irish Popular Middle Names Maximo, Zander Pronunciation 🔊 Listen Alen Similar Names Allam Akker All Atty Ferghus Fearghus Budzyk Atrus Arturs Jibade Year by Year Popularity of Alen