Manuel Fernando Gonilho Matias (born 30 March 1962 in Alfundão, Ferreira do Alentejo) is a retired long-distance runner from Portugal, who won the 1989 edition of the Fukuoka Marathon, clocking 2:12:54 on 3 December 1989. A year earlier he triumphed in the Paris Marathon. Matias represented his native country at the 1996 Summer Olympics in Atlanta, Georgia, finishing in 46th place (2:20:58).
He won the City-Pier-City Loop half marathon in the Hague in 1992.