Ally \a(l)-ly\ as a girl's name is a variant of Alberta (Old German), Alexandra (Greek), Alice (Old German), Alison (Old German) and Allie, and the meaning of Ally is "noble, bright, famous; man's defender; noble, exalted".
The baby name Ally sounds like Alli, Alle, Alla, Alley, Aley and Elly. Other similar baby names are Alvy, Allyn, Alby, Allfy, Alfy, Allys and Arly.