Cinthia is an English name for girls. The meaning is `from Mount Kynthos (Greece)` The name Cinthia is most commonly given to American girls. What do they use in other countries? Jackie (English) Jacky (English) Sinne Jackey Jacki (English) The name sounds like: Cinthie, Cintha Similar names are: Cintia, Anthia, Cindia, Synthia, Kynthia, Cyntia, Cy... Found on https://www.pregnology.com/names/girls/Cinthia