Mark López Mendieta is an American taekwondo practitioner. Mark represented the United States in the 2008 Summer Olympics in Beijing, China. He advanced to the men's -68 kg Gold Medal Match where he lost to Korea's Tae-Jin Son on a last second hit, giving him the silver medal.
Along with his brother Steven and his sister Diana, he won a gold medal at the 2005 World Taekwondo Championships.
He is the younger brother of Olympic gold medalist Steven López and their Taekwondo coach Jean Lopez and older brother of Olympian Diana López and is married to Dagmar López.