Lee Jang-hyung (born 16 August 1974) is a South Korean gymnast. He competed at the 2000 Summer Olympics where he finished fourth in the pommel horse final.. He won the gold medal on pommel horse in the 1994 Asian Games, as well as silver medals in the team events in both the 1994 and 1998 Asian Games.
His brother, Lee Joo-hyung, was also an artistic gymnast.