学院（古希腊语：Ἀκαδήμεια），又称柏拉图学院，是古希腊哲学家柏拉图在约前387年创立于于雅典的学校，许多古希腊哲学名士曾受教于此。例如后来开创「逍遥学派」、创建自己学校的亚里斯多德便曾在此念了20年书。学院在整个希腊化时期都坚持怀疑论主义（Academic skepticism），直到前83年，拉里萨的斐洛逝世为止。学院里的哲学家教师在柏拉图死后仍继续教授他的哲学，410年时一度成为新柏拉图主义的学术中心。学院最后在529年，罗马帝国皇帝查士丁尼一世下令学院关闭，这才结束柏拉图学院的教学史。

The Academy (Ancient Greek: Ἀκαδημία) was founded by Plato (428/427 BC – 348/347 BC) in ca. 387 BC in Athens. Aristotle (384 BC – 322 BC) studied there for twenty years (367 BC – 347 BC) before founding his own school, the Lyceum. The Academy persisted throughout the Hellenistic period as a skeptical school, until coming to an end after the death of Philo of Larissa in 83 BC. Although philosophers continued to teach Plato's philosophy in Athens throughout the Roman era, it was not until 410 AD that a revived Academy was established as a center for Neoplatonism, persisting until 529 AD when it was finally closed by Justinian I.