Hermia \he(r)-mia\ as a girl's name is of Greek origin, and the meaning of Hermia is "messenger". Feminine form of Hermes, the name of the Greek messenger god. Literary: Hermia is a character in Shakespeare's "A Midsummer Night's Dream".
Hermia has 3 variant forms: Hermila, Hermilda and Herminia.
For more information, see also related names Erma and Hermione.
A baby name that sounds like Hermia is Herma.