Austro-Bavarian is an Upper Germanic dialect family spoken in Southern Bavaria, the major part of Austria (outside of Vorarlberg, where an Alemannic dialect is spoken), and South Tyrol (politically a part of Italy).

It includes the Austro-Bavarian dialect, as well as the Cimbrian and Mócheno dialects spoken in formerly Austrian parts of modern Italy, and Hutterite German, spoken by some ethnic German communities in North America.