Editing 3rd century BC (section)

===Science and philosophy===
*[[Apollonius of Perga]], Greek mathematician
*[[Arcesilaus]], Greek philosopher
*[[Archimedes]], Greek mathematician, physicist, and engineer
*[[Aristarchus of Samos]], Greek astronomer and mathematician
*[[Aristillus]], the Greek astronomer
*[[Berossus]] Hellenistic Babylonian historian and astronomer
*[[Conon of Samos]], the Greek astronomer
*[[Demetrius of Phalerum]], Greek philosopher and orator
*[[Dicaearchus]], Greek philosopher and scientist
*[[Epicurus]], Greek philosopher
*[[Eratosthenes]], Greek mathematician, geographer, and astronomer
*[[Euclid]], the Greek geometer
*[[Han Fei]] (韓非), Chinese philosopher
*[[Manetho]], Hellenistic Egyptian historian
*[[Mencius]], Chinese philosopher
*[[Philo of Byzantium]], Greek mechanic
*[[Pyrrho]], Greek philosopher
*[[Theophrastus]], Greek philosopher
*[[Timon of Phlius]], Greek philosopher
*[[Xun Kuang]] (荀況, Xun Li), Chinese philosopher
*[[Zeno of Citium]], Greek philosopher
*[[Zenodotus]], Greek grammarian