Agustín Díaz (born June 6, 1954), known as Augie Diaz, is an American sailor and world-class competitor in the Snipe, Star and Laser classes. He is the son of Gonzalo Diaz, who sailed for Cuba at the 1959 Pan American Games. He received the US Sailor of the Year Award in 2003, and was inducted in the National Sailing Hall of Fame in 2021. He has been Snipe world champion in 2003 and 2005, and Star world champion in 2016. He has won a silver medal in Snipe at the and a silver medal in the Snipe at the 2011 Pan American Games and a bronze medal at the 2015 Pan American Games.