The name Alaina is a girl's name of Irish origin meaning " or :harmony". Alaina is ranked #182 on our popularity charts and is often added to user-created lists like "A" names for girls and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
Alaina, part Alana and part Elena and maybe also a little bit Elaine, is one of the many feminine forms of Alan (or its French form Alain) that have grown in popularity over recent decades, surpassing the male original. Not quite fashionable but also not quite un, Alaina is a choice that may feel more distinctive than it really is.