Hall of the Academy of Athens, Protected hall in central Athens, Greece.

The Hall of the Academy of Athens is a marble neoclassical building on Panepistimiou Street, designed by Theophil Hansen as part of the Athenian Trilogy with the University and the National Library. Two columns taller than the building stand at the entrance: Apollo with his lyre on the left, Athena in full armour on the right. The pediment shows the Birth of Athena, and the sculptural decoration is largely the work of Leonidas Drosis.

Simon Sinas funded the building in 1856, and Theophil Hansen designed it in 1859; the foundation stone was laid that year in a ceremony where King Otto spoke. Work was interrupted in 1864–1868, and after Sinas died in 1876 his widow Iphigenia took over the project. The marble hall was finished in 1885 and handed to Prime Minister Charilaos Trikoupis by architect Ernst Ziller on 20 March 1887.

The entrance displays statues of Plato and Socrates, honoring two ancient thinkers who shaped Western thought. Inside the ceremonial hall, eight mythological scenes on the walls tell the story of Prometheus and show how art brings classical mythology to life.

The marble hall stands on Panepistimiou Street, with the University of Athens on its left and the National Library beyond it, forming the so-called Athenian Trilogy. The entrance front faces the street, where the columns carrying Apollo and Athena rise well above the roofline. The Academy's ceremonial rooms are not a general museum; visitors mainly see the facade and the statues of Socrates and Plato at the door.

The Academy forms the Athenian Trilogy with the University and the National Library, but the three were not built at once: Theophil Hansen designed the Academy, his elder brother Christian the University, and the Library was finished last, in 1901. The Academy's marble came from a donation of Simon Sinas, who died in 1876 before the work was done.