The name Ally is a girl's name . Ally and is often added to user-created lists like Old-Fashioned, Vintage, Retro, Classic, Eclectic, Unusual and Uncommon Names for Girls and discussed in our forums with posts like "Girls Makeover".
From the experts:
This spelling variation of the popular girls' nickname ranks behind the more traditional form—Allie (Number 255). This spelling could be hurt by the word name ally, which bears a different pronunciation.