Allain \a(l)-lain\ as a boy's name is a variant of Alain and Alan (Old German), and the meaning of Allain is "precious".

The baby name Allain sounds like Allin and Allan. Other similar baby names are Albain, Alair, Allyn, Allon, Allie, Alleyn, Allen, Allayne, Alin, Alann, Ailin, Alban, Alvin, Alvan, Albin, Alpin, Aldin, Aldan, Allson, Allcen, Allton, Aylwin, Alwin, Aluin, Aloin, Arlin, Arlan, Aslan, Blain and Adlin.