Marco Fortes (born 26 September 1982) is a male shot putter from Portugal.

His personal best throw is 21.02 meters – Portuguese record – was achieved at the 2012 European Cup Winter Throwing in Bar, Montenegro, where he won the gold medal.

In Beijing 2008, after beating his personal (and national) record (18.05) he jokingly stated "I seem to perform better in the afternoon.

This spawned controversy, especially when Nelson Évora, who was the only Portuguese athlete to earn olympic gold that year, protested against his expulsion upon his victory speech on national TV.

Marco Fortes carried on beating his personal (and national) records, arriving at 20.52 in 2009, 20.89 in 2011, and 21,02 in 2012.