Nuno Miguel Santos Barreto, <small>ComIH</small> (born 29 April 1972) is a Portuguese competitive sailor and Olympic medalist.
He won a bronze medal in the 470 class at the 1996 Summer Olympics in Atlanta, along with his partner Hugo Rocha.
At the 1996 470-European-Sailing-Championship he won with his Partner Hugo Rocha the silver medal.