Alia is most simply the feminine form of Ali, one of the 99 attributes of Allah. The name is used by both Muslims and Jews; the word Aliyah means to make a pilgrimage to Israel and the words in both languages mean sublime, lofty, or exalted. Alia is also the name of the heroine of Frank Herbert's science fiction classic Children of Dune
While Alia is the sleekest version of the name, both the most ancient and the most modern-feeling, its most famous relative in the U.S. today is the more complicated Aaliyah.
In this extended family of names, Aaliyah is currently Number 36, Aliyah is 140, Aliya is 597, and Alia is 763.