Charles Fernandez (born 28 December 1995) is a Guatemalan modern pentathlete. He competed at the 2016 Summer Olympics in the men's event and finished fifteenth. Fernandez won the men's modern pentathlon at the 2015 Pan American Games. He also won a gold medal at the World Junior Championships. Fernandez has competed in three World Modern Pentathlon Championships as well as multiple youth and junior world championships and a Central American and Caribbean Games.