With the return to democracy in the 1990s, Brazil became a stage for a series of initiatives aimed at guaranteeing linguistic and educational rights for numerous regions of the Brazilian population historically excluded from public policies. Among these initiatives, there are two specific ones aimed at promoting and recognizing Brazilian languages: the Policy of the National Inventory of Linguistic Diversity of Brazil, a public policy created by Federal Decree number 7,387 on December 9, 2010, and the Policy of Co-officialization of Languages by Municipalities, which began in 2002 in São Gabriel da Cachoeira, Amazonas. Both are public policies of recognition and production of knowledge about Brazilian languages, with significant impact on challenging the ideology of monolingualism that predominates in the country and proposing a language management policy aimed at fostering linguistic diversity. After a brief historical and political contextualization of the Brazilian State’s actions regarding languages, I briefly present the co-officialization and inventory policies, highlighting some of their results. Finally, we indicate, by way of example, avenues for articulation to plan future actions aimed at supporting Brazilian languages.