Teles of Megara was a Cynic philosopher active in the mid-3rd century BCE, during the Hellenistic period. Originally from Megara, a city with a strong philosophical history, he worked as a teacher. His precise birth and death dates are unknown, but his writings reference historical figures from the 240s BCE, which helps place his life.

His philosophical works are known only through fragments preserved centuries later by the anthologist Stobaeus. These fragments come from popular lectures or discourses known as diatribes. The titles of his works, such as On Self-Sufficiency, On Exile, and That Virtue is Sufficient for Happiness, reflect core Cynic themes. The complete texts are lost, and only excerpts survive.

According to modern scholars, Teles's primary significance lies in his role as a transmitter of Cynic thought. His fragments are considered some of the earliest surviving examples of the Cynic-Stoic diatribe style, a form of moral exhortation that influenced later Roman philosophers. His accessible teachings, which used anecdotes and references to contemporary life, provide valuable insight into how Cynic ideas about resilience, simplicity, and virtue were communicated to a broad audience in his time.