Athens Olympic Indoor Hall | |
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| Full name | Indoor Sports Center of O.A.C.A. |
|---|---|
| Location | Athens Olympic Sports Complex, Marousi, Athens, Greece |
| Coordinates | 38°02′16″N 23°47′05″E / 38.037862°N 23.784676°E |
| Public transit |   Eirini |
| Owner | Panathinaikos B.C. |
| Operator | Panathinaikos B.C. |
| Capacity | Gymnastics: 17,600 Basketball: 18,300[1] |
| Surface | Glass floor |
| Construction | |
| Opened | 1994 |
| Renovated | 2002–2004 (Olympic Games) 2023–present |
| Architect | Santiago Calatrava (2004 renovation) Populous (current renovation) |
| Tenants | |
| Panathinaikos B.C. | |
The Olympic Indoor Hall of O.A.C.A. is a part of the Spyros Louis Olympic Athletic Center of Athens (Greek: O.A.K.A. «Σπύρος Λούης»), was completed in 1994 and is the largest indoor venue in Greece. It was used for sporting events at the 2004 Summer Olympics. The venue is located in Marousi, in the northern section of Athens. During its construction, it was considered to be one of the biggest and most modern indoor sports arenas in all of Europe.
The 18,300-capacity arena[2] also contains a training facility.
In 2023, Panathinaikos B.C. signed an agreement with the Greek state for a 49-year concession of the venue,[3] making the club the sole tenant and binding it to invest in the renovation of the asset's infrastructure.