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 represented his country in the marathon at the 2009 World Championships in Athletics and the 2010 European Athletics Championships. He has also competed at four editions of the World Athletics Cross Country Championships and six editions of the European Cross Country Championships. 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.