Uruguayan Brazilian (Portuguese: Uruguaio-brasileiro, Spanish: Uruguayo-brasileño, Rioplatense Spanish: Uruguayo-brasilero) is a Brazilian person of full, partial, or predominantly Uruguayan ancestry, or a Uruguayan-born person residing in Brazil.

Modern estimates put the figure of Uruguayans in Brazil at about 55,000.

There are many thousands of Uruguayan citizens who also have Brazilian citizenship and vote in elections in both countries.