Cynthia is a feminine given name of Greek origin: Κυνθία, Kynthía, "from Mount Cynthus" on Delos island. It can be abbreviated as Cindy. There are various spellings for this name.
Cynthia was originally an epithet of the Greek goddess of the moon, Artemis, who was sometimes called "Cynthia" because, according to legend, the goddess was born on Mount Cynthus.
Read more about Cynthia: People With The Given Name Cynthia (or A Variant Thereof), Fictional Characters