Hierocles was a Stoic philosopher active during the 2nd century CE in the Roman Empire. Almost no personal details of his life are known, and he is distinguished from other later philosophers who shared his name. His work belongs to the period of Roman Stoicism, when the philosophy was highly influential in public life.

His writings survive only in fragments, primarily preserved in a 5th-century anthology compiled by Stobaeus. The main works attributed to him are the Elements of Ethics and On Appropriate Acts, which are systematic treatments of Stoic ethical theory.

Hierocles is a significant source for understanding later Stoic practical philosophy. Modern scholars consider his treatment of the concept of oikeiōsis (often translated as "appropriation" or "affiliation") to be particularly important. In his Elements of Ethics, he famously illustrates this idea with the image of concentric circles of concern, which start with the self and expand outward to family, community, and all humanity. According to his argument, the ethical task is to "draw the circles together," cultivating a sense of care for others as an extension of care for oneself. His work provides a clear, developed example of Stoic social ethics from the Imperial period.