Slavia may refer to:
- Medieval toponymy
- One of the tribal centers of early East Slavs, see Saqaliba
- The medieval name for the Wendish settlement area
- The medieval name for the duchy of Pomerania
- The medieval name for Mecklenburg
- The medieval name for the Rani principality
- A term for the objective of Pan-Slavism of forming a united ethnic Slavic state
- Slavia, Florida, an unincorporated community in Seminole County, Florida