"Plato Commentary" is not a single author but a term for a major genre of philosophical writing from the 2nd to the 6th century CE. This period, known as Late Antiquity, was dominated by Platonist philosophers who systematically interpreted Plato's works. These philosophers, often teachers in schools in cities like Athens and Alexandria, wrote commentaries to explain Plato's complex ideas to students and to debate doctrines within their tradition. Their writings, composed in a refined, classical Greek style, were frequently based on lecture notes.

The genre includes works by many significant thinkers, such as Albinus in the 2nd century, Plotinus and Porphyry in the 3rd, and later figures like Proclus and Olympiodorus in the 5th and 6th centuries. While dozens of commentaries were produced, only some survive completely. Important surviving examples include Proclus's commentaries on Plato's Timaeus and Parmenides, Olympiodorus's on the Gorgias, and an anonymous ancient commentary on the Theaetetus preserved on papyrus.

According to modern scholars, this body of work is crucial for understanding the history of philosophy. These commentaries were the main tool for studying Plato for centuries and they preserve detailed interpretations and debates on metaphysics, ethics, and knowledge. They also served as a vital bridge between ancient and medieval thought, profoundly influencing philosophy in the Byzantine, Islamic, and later Latin European traditions.