Onán Barreiros Rodríguez (born 3 November 1981 in Las Palmas, Gran Canaria) is a Spanish sailor, who specialized in two-person dinghy (420 and 470) class. He represented Spain, along with his partner Aarón Sarmiento, in two editions of the Olympic Games (2008 and 2012), and has also been training for the Royal Nautical Club of Gran Canaria () throughout most of his sporting career under his personal coach and mentor Jorge Angulo. As of September 2013, Barreiros is ranked no. 14 in the world for two-person dinghy class by the International Sailing Federation.
