Southern Pannonia may refer to:
- in geography, southern regions of the Pannonian Basin
- in ancient history, southern regions of the Roman Province of Pannonia, including:
- late Roman Province of Pannonia Savia, and
- late Roman Province of Pannonia Secunda
- in medieval history, early medieval Slavic Principality of Lower Pannonia (Pannonia inferior) and the Balaton Principality