The Athens Olympic Aquatic Centre is a complex at the Athens Olympic Sports Complex in Marousi, Athens, Greece, consisting of two outdoor pools and one indoor pool, that was built for the 1991 Mediterranean Games. It was refurbished and expanded for the 2004 Summer Olympics and the 2004 Summer Paralympics. The larger of the two outdoor pools, which seats 11,500 spectators, hosted swimming and water polo events. The smaller pool, which hosted synchronized swimming, had the capacity for 5.300 people. The indoor pool also hosted the water polo, diving and the swimming during the Paralympics had capacity for another 6.300 persons.

The 2004 Summer Paralympics, the 12th Summer Paralympic Games, were a major international multi-sport event for athletes with disabilities governed by the International Paralympic Committee, held in Athens, Greece from 17 to 28 September 2004. 3,808 athletes from 136 countries participated. During these games 304 World Records were broken with 448 Paralympic Games Records being broken across 19 different sports. 8,863 volunteers worked along the Organizing Committee.