Sidonia \s(i)-do-nia\ as a girl's name is pronounced sih-DOHN-yah. It is of Latin origin, and the meaning of Sidonia is "from Sidon". Sidon was a city in Phoenicia in the Middle East. Saint Sidonius (fifth century) lived and wrote about characters and events during the breakup of the Roman Empire in the West.

Sidonia has 6 variant forms: Sidaine, Sidonie, Sidony, Sydona, Sydonah and Sydonia.

Baby names that sound like Sidonia are Sedonia, Sedona, Sadona, Sidnie and Sidni.