Fernando Sérgio Rigor Silva (born 1 March 1980) is a Portuguese former long-distance runner who competed at distances from 3000 metres to the marathon.
He shared in a team bronze medal with the Portuguese men at the 2003 European Cross Country Championships.
He was twice national champion at the Portuguese Cross Country Championships.
Silva failed a drug test for erythropoietin (EPO), a banned blood-booster, in December 2006, which resulted in his disqualification from the 2006 European Cross Country Championships and a two-year ban.
[1] Later he received an 8-year ban from competition in 2014 after failing a doping control based on his biological passport.