The Athens Olympic Park  is a sport facilities complex located at Marousi, northeast Athens, Greece. The complex consists of five major venues as well as other supplementary sport facilities.

The Main Olympic Stadium was designed in 1979 and inaugurated in 1982. A number of other sport facilities were built around the Main Olympic Stadium in the following years: the Olympic Velodrome (inaugurated in 1991), the Olympic Aquatics Center (1991), the Olympic Indoor Sports Center (1995), the Olympic Tennis Center (2004), as well as other supplementary sport facilities.

The complex went through a substantial refurbishment  for the 2004 games under the design of Spanish architect Santiago Calatrava.

Twelve years after, the complex lies in a general state of neglect, raising questions about how the nation has benefited from the multi-billion-dollar event.