Diogo Rocha (born 14 June 1984) is a Portuguese former professional tennis player who competed in the ITF Men's Circuit. He achieved his highest singles ranking of 634 in the world by the Association of Tennis Professionals (ATP) in February 2005. Though he never entered a singles event in the ATP Challenger Tour, Rocha did play in the 2003, 2004 and 2005 Estoril Open, and was selected for one Davis Cup tie in 2005.