' Diogo Viana (born February 22, 1990 in Lisbon, Province of Brescia) is an Portugal striker who currently plays for Bwin Liga club FC Porto. ==Club career== Viana made his professional debut on December 20, 2007, scoring in the first leg of the Bwin Liga round of 16 against Benfica, and scored a second goal in the return leg on January 16,2008. He made his Serie A debut on February 10 against Sporting Braga as a substitute for Adriano, and scored the match's only goal with his first touch eighteen seconds after coming onto the pitch. He started the next Bwin Liga match on February 13 against Belenenses. On February 19 he scored FC Porto's only goal in the 2-1 loss against Benfica, at Dragao.