Trinidad Municipality is located in Beni Department in Bolivia.

It borders San Javier Municipality in the North, Moxos Province in the West, and Marbán Province in the South and Southeast.

Trinidad (75,540 inhabitants (2001 census)) is the province capital and is located in the western part of the municipio.

In the recent two decades, the municipio population has increased from 60,953 inhabitants (1992 census) to 79,963 (2001 census) and an estimated 85,500 inhabitants (2008).

This is subdivided into ten subcantons (Sub-Cantones):