Arllen \a-rllen, ar(l)-len\ as a boy's name is a variant of Arlen (Gaelic), and the meaning of Arllen is "pledge, oath".
The baby name Arllen sounds like Arrlen, Arlyn, Arlin, Arlenn and Arlan. Other similar baby names are Allen, Aren, Arjen, Allyn, Allon, Allin, Alleyn, Allan, Alen, Arden, Arrden, Arien, Arles, Arley, Arlie, Arlea, Armen, Arren, Arsen and Ashlen.