João Costa may refer to:
Places João Costa, Piauí, Brazil
People João da Costa (1610–1664), Portuguese noble, Count of Soure, and one of the Forty Conspirators João Cruz Costa (1904–1978), a Brazilian philosopher João Resende Costa (1910–2007), Brazilian Roman Catholic bishop João Costa (fencer) (1920–2010), Portuguese fencer João Costa (sport shooter) (born 1964), Portuguese sports shooter João Costa (politician) (born 1972), Portuguese politician João Costa (footballer, born 1996), Portuguese football goalkeeper João Costa (footballer, born 2000), Portuguese football striker for Santa Clara João Costa (footballer, born 1 March 2005), Brazilian football midfielder for Botafogo-SP João Costa (footballer, born 28 March 2005), Portuguese football winger for Al-Ettifaq