Look up Sidonia in Wiktionary, the free dictionary.
Sidonia is a feminine given name. It may also refer to:
- 579 Sidonia, an asteroid
- USS Sidonia (AKA-42), a U.S. Navy attack cargo ship
- Order of Sidonia, a chivalric order for women instituted by the Kingdom of Saxony
- Sidonie (Brumov-Bylnice), a district of Brumov-Bylnice, Czech Republic
- Sidonia, Tennessee, Weakley County, Tennessee
- Fromont and Risler, also titled Sidonie, an 1874 French novel
- Sidonia, a starship in Knights of Sidonia, a Japanese manga series by Tsutomu Nihei