Aristotle, a famous greek naturalist/philosopher studied at Plato's Academy. Nobody, just Plato and some others. The above answer by some unknown person is wrong, since Aristotle taught Plato. That is incorrect. Socrates taught Plato, Plato taught Aristotle. The first answer was correct.
The Greek philosopher Plato. He created it around 387 B.C.E. Plato presided over the Academy, an institution devoted to research and instruction in philosophy and the sciences until his death. His reasons for setting up the Academy were to train young men who would become better statesmen.
The most famous student of Socrates who founded the academy was Plato [Πλάτων]. Since Socrates did not leave any written doctrines Plato in his works provides all the issues that had been examined by Socrates.
Socrates taught ethics and philosophy to anyone who would listen. Amongst those who did was Plato, who took Socrates' basic ideas and expanded them in his own writings. Plato also founded a school, called the Academy. Aristotle studied at the Academy for almost 20 years.