São Leopoldo (Portuguese pronunciation: [sɐ̃w lewˈpowdu]) (Portuguese for Saint Leopold) is a Brazilian industrial city located in the south state of Rio Grande do Sul.

The climate is sub-tropical, with temperatures varying from -2 °C minimum at Winter to more than 40 °C maximum during summer time.

As a Brazilian variant of European Moselle Franconian, it is also spoken beyond the state of Rio Grande do Sul, where for almost two hundred years it has been historically centered and where most of its 2 to 3 millions speakers live (there are speakers in neighboring southern Brazilian states, as well as in Argentina, Paraguay and Uruguay).

There are many other municipalities with this bilingual profile throughout the state and the German language is experiencing a strong revival: in 2012 the state chamber of deputies voted unanimously in favor of recognizing the Hunsrückisch Germanic dialect of Rio Grande do Sul as an official historical intangible cultural heritage to be preserved.

This geographical article relating to Rio Grande do Sul is a stub.