Slavic in origin, as Milka, Milena or Milenka, the popular girl's name Mia means "dear" or "darling girl." This sweet sentiment may be one reason that Mia is a top 10 girl's name. Interestingly, Mia is not only popular in England and the United States, but also in Germany and the Philippines, making it the most versatile name on the list. Also worth mentioning, it didn't even land on the radar of the United States until the 1950s. If you end up having a darling girl, then Mia is a name you might want to consider.