Brasiguaio ( Portuguese) or brasiguayo ( Spanish) is a term referring to Brazilian migrants in Paraguay and their descendants. The word Brasiguaio has been used by members within and outside this group to categorize individuals whose lives are connected with both Brazil and Paraguay, and more specifically to refer to Brazilians who live or have lived in Paraguay. They typically live in the Southeastern Paraguayan departments of Canindeyú and Alto Paraná, which border with Brazil. Most emigrated from Brazil by the 1960s. They are often accused of imposing on the culture, language and currency of Paraguay. In total they make up 455,000 Brasiguaios , or about one-tenth of Paraguay's population.
In some border zones, Brasiguayos and their descendants are more than 90% of the population, where Portuguese is still spoken as the mother tongue. In San Alberto de Mbaracayú city, approximately 80% of its 23,000 inhabitants are of Brazilian ancestry.