Cássio Roberto Ramos (born 6 June 1987), known as Cássio, is a Brazilian professional footballer who plays as a goalkeeper for Corinthians and the Brazil national team. He is widely considered to be one of the greatest Corinthians goalkeepers of all time. At international level, Cássio has represented the Brazil national team, making his debut in 2017, and was part of the squads that took part in the 2018 FIFA World Cup and that won the 2019 Copa América.