Barreiro may refer to:
People Bruno Barreiro (born 1965), American politician Gustavo Barreiro (1959–2019), American politician Jose Carlos Barreiro, São Toméan politician Manu Barreiro (born 1986), Spanish footballer Guzmán Barreiro (born in 1982), former Uruguayan rugby union player
Places Barreiro, Portugal Barreiro railway station Barreiro, Cape Verde, a town in Cape Verde Barreiro River (disambiguation), several rivers in Brazil and Portugal
See also Barreiros (disambiguation)