Lycon of Alexandria was a philosopher of the 3rd century BCE. He was a member of the Peripatetic school, which followed the teachings of Aristotle. Lycon studied under Strato of Lampsacus, who was then the head of the school, known as the Lyceum. After Strato's death, Lycon himself became the head, or scholarch, of the Peripatetics. He held this leadership position for a notably long time, recorded as over forty-four years, before being succeeded by Ariston of Ceos.

No specific writings by Lycon survive today, and the exact titles and subjects of his works are lost. Ancient sources mention he wrote several texts, but they provide no further details. His primary historical importance stems from his long tenure as scholarch, which provided institutional stability for the Lyceum during the Hellenistic period. According to modern scholars, Lycon is not considered a major original thinker in philosophy. Ancient accounts instead highlight his personal qualities, describing him as eloquent, sociable, and fond of an elegant lifestyle and physical fitness. Some academics suggest his leadership marks a shift where the school's focus moved somewhat away from rigorous scientific inquiry and more toward literary and rhetorical pursuits.