Cynthia is a feminine given name of Greek origin: Κυνθία, Kynthía, "from Mount Cynthus" on the island of Delos.

[2] [3] Cynthia was originally an epithet of the Greek goddess Artemis, who according to legend was born on Mount Cynthus on Delos.

Selene, the Greek personification of the moon, and the Roman Diana were also sometimes called "Cynthia".

[4] In Ancient Roman literature 'Cynthia' is the name of Propertius' love.

It has since declined in use in the United States and ranked in 806th position on the popularity chart there in 2021.