Demetrius Triclinius (Greek: Δημήτριος Τρικλίνιος; b. c. 1300), a native of Thessalonica, was a Byzantine scholar who edited and analyzed the metrical structure of many texts from ancient Greece, particularly those of Aeschylus,^[1] Sophocles and Euripides. He is often compared favorably with two contemporary annotators of ancient Greek texts, Thomas Magister and Manuel Moschopulus. He also had knowledge of astronomy.