What does Mia mean, popularity, numerology and more. The name Mia is of Italian and Latin origin. The meaning of Mia is mine. It is also of Danish origin, where its meaning is beloved.ia is generally used as a girl's name. It consists of 3 letters and 2 syllables and is pronounced Mi-a. In the U.S. in 2014, it ranked 6 in baby name popularity for girls with 13442 occurrences. It ranked 6475 in popular baby names for boys with 13 occurrences.