Mokdong Hyperion (Korean: 목동 하이페리온) is a group of three residential buildings located in the Mok-dong, Yangcheon-gu district of Seoul, South Korea, completed in 2003. The tallest of which, Tower A, is 69 floors and high, making it the fifth tallest building in Seoul and the world's 214th tallest building. The towers are used as residential housing. Tower A is the world's 48th tallest residential building. Below the building is a Hyundai Department store, a chain of high end department stores in South Korea. At the time of its completion, the building was the tallest in the country but was surpassed by Samsung Tower Palace 3 – Tower G in 2004.
The Hyperion Tower floors B1~B2 and 1~7 are a department store, while B3~B6 are a parking lot, and floors 9~65 are residential.